Butanoic acid impurities and related standards

368 reference standards related to Butanoic acid held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.

In this group: 356 fine chemicals · 6 stable isotope labelled standards · 4 impurity reference standards · 1 reference standard. CAS numbers are listed for 368 of 368; 286 entries carry a structure drawing.

On this page

368 reference standards

All entries — structure, identifiers and pack sizes

Butanoic Acid

CAS not assignedRS-B149365

COA per lot
(+/-)-2-Acetylaminobutanoic Acid-d3

CAS 1219397-36-0RS-B149001

Formula C6H8D3NO3 MW 148.17
COA per lot
2-(2-Chloro-6-hydroxy-4-(trifluoromethyl)phenylamino)-3-methylbutanoic Acid

CAS not assignedRS-B149362

Formula C12H13ClF3NO3 MW 311.69
COA per lot
4-(4-Nitrophenyl)Butanoic Acid

CAS 5600-62-4RS-B149002

Formula C10H11NO4 MW 209.2
COA per lot
4-Hydroxybutanoic Acid

CAS 591-81-1RS-B149004

Formula C4H8O3 MW 104.1
COA per lot
Butanoic acid 2-(dimethylamino)ethyl ester

CAS 16597-65-2RS-B149047

Formula C8H17NO2
COA per lot
Butanoic acid, (1aS,2S,4aR,6aS,6bR,7aS,8S,10aR,12aS,12bR)-8-(acetyloxy)-1a,2,6a,6b,7a,8,12a,12b-octahydro-5,11-dioxo-5H,11H-4a,10a-epidithio-4H,10H-bisoxireno[g,g']pyrazino[1,2-a:4,5-a']diindol-2-yl ester

CAS 220345-71-1RS-B149051

Formula C24H24N2O8S2
COA per lot
Butanoic acid, (1S,3S,5Z,7R,8E,11R,13E,15S,17R,21R,23R,25S)-1,11,21-trihydroxy-17-(1R)-1-hydroxyethyl-5,13-bis(2-methoxy-2-oxoethylidene)-10,10,26,26-tetramethyl-19-oxo-18,27,28,29-tetraoxatetracyclo21.3.1.13,7.111,15nonacos-8-en-25-yl ester

CAS 107021-11-4RS-B149048

Formula C41H62O15
COA per lot
Butanoic acid, (1S,3S,5Z,7R,8E,11S,12S,13E,15S,17R,21R,23R,25S)-1,11,21-trihydroxy-17-(1R)-1-hydroxyethyl-5,13-bis(2-methoxy-2-oxoethylidene)-10,10,26,26-tetramethyl-19-oxo-18,27,28,29-tetraoxatetracyclo21.3.1.13,7.111,15nonacos-8-ene-12,25-diyl ester

CAS 102580-64-3RS-B149049

Formula C44H66O16
COA per lot
Butanoic acid, (1S,3S,5Z,7R,8E,11S,12S,13E,15S,17R,21R,23R,25S)-25-(acetyloxy)-1,11,21-trihydroxy-17-(1R)-1-hydroxyethyl-5,13-bis(2-methoxy-2-oxoethylidene)-10,10,26,26-tetramethyl-19-oxo-18,27,28,29-tetraoxatetracyclo21.3.1.13,7.111,15nonacos-8-en-12-yl

CAS 102604-78-4RS-B149050

Formula C43H64O17
COA per lot
Butanoic acid, (3,5-dihydroxyphenyl)methyl ester (9CI)

CAS 386263-88-3RS-B149352

Formula C11H14O4 MW 210.23
COA per lot
Butanoic acid, (3R)-1-methyl-3-piperidinyl ester (9CI)

CAS 316353-98-7RS-B149338

Formula C10H19NO2 MW 185.27
COA per lot
Butanoic acid, (3S)-1-methyl-3-piperidinyl ester (9CI)

CAS 335162-97-5RS-B149340

Formula C10H19NO2 MW 185.27
COA per lot
Butanoic acid, 1-methyl-4-piperidinyl ester (9CI)

CAS 311802-59-2RS-B149336

Formula C10H19NO2 MW 185.27
COA per lot
Butanoic acid, 1-methylethenyl ester

CAS 69638-92-2RS-B149052

Formula C7H12O2
COA per lot
Butanoic acid, 1-methylheptyl ester

CAS 20286-44-6RS-B149269

COA per lot
Butanoic acid, 2,2-dibroMo-3-oxo-, phenylMethyl ester

CAS 362610-30-8RS-B149005

Formula C11H10Br2O3 MW 350
COA per lot
Butanoic acid, 2,2-difluoro-3-methyl-

CAS 1027513-87-6RS-B149053

Formula C5H8F2O2
COA per lot
Butanoic acid, 2,2-dimethyl-, ethyl ester

CAS 5129-40-8RS-B149006

Formula C8H16O2 MW 144.21
COA per lot
Butanoic acid, 2,3,3-trimethyl-, methyl ester

CAS 19910-30-6RS-B149054

Formula C8H16O2
COA per lot
Butanoic acid, 2-(2-amino-1-imino-2-oxoethyl)hydrazide

CAS 112032-70-9RS-B149055

Formula C6H12N4O2
COA per lot
Butanoic acid, 2-(2-chloroethyl)-2-ethyl-, methyl ester

CAS 1864060-70-7RS-B149007

Formula C9H17ClO2 MW 192.68
COA per lot
Butanoic acid, 2-(acetylamino)-, 1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl ester

CAS 2248267-79-8RS-B149056

Formula C14H14N2O5
COA per lot
Butanoic acid, 2-(acetylamino)-, 1-methylethyl ester, (R)-(9CI)

CAS 174158-54-4RS-B149057

Formula C9H17NO3
COA per lot
Butanoic acid, 2-(acetylamino)-2-ethyl-

CAS 139578-94-2RS-B149058

Formula C8H15NO3
COA per lot
Butanoic acid, 2-(acetylamino)-3-amino-

CAS 103994-49-6RS-B149059

Formula C6H12N2O3
COA per lot
Butanoic acid, 2-(acetylhydroxyamino)-

CAS 112240-09-2RS-B149302

COA per lot
Butanoic acid, 2-(acetylmethylamino)-

CAS 114126-84-0RS-B149060

Formula C7H13NO3
COA per lot
Butanoic acid, 2-(aminomethyl)-4-(methylthio)-(S isomer)

CAS 671233-62-8RS-B149061

Formula C6H13NO2S
COA per lot
Butanoic acid, 2-(aminomethylene)-3-oxo-, methyl ester (9CI)

CAS 113481-03-1RS-B149062

Formula C6H9NO3
COA per lot
Butanoic acid, 2-(benzoyloxy)-3-methyl-, (R)-(9CI)

CAS 198541-40-1RS-B149063

Formula C12H14O4
COA per lot
Butanoic acid, 2-(benzoyloxy)-3-methyl-, (S)-(9CI)

CAS 169140-90-3RS-B149064

Formula C12H14O4
COA per lot
Butanoic acid, 2-(hydroxyimino)-3-oxo-(9CI)

CAS 14352-66-0RS-B149065

Formula C4H5NO4
COA per lot
Butanoic acid, 2-(hydroxymethylene)-3-oxo-, methyl ester (9CI)

CAS 131607-55-1RS-B149312

COA per lot
Butanoic acid, 2-(triphenylphosphoranylidene)-, ethyl ester

CAS 22592-13-8RS-B149066

Formula C24H25O2P
COA per lot
Butanoic acid, 2-[(1,2-dihydro-4-hydroxy-2-oxo-1,8-naphthyridin-3-yl)methylene]-3-oxo-, ethyl ester (9CI)

CAS 401938-64-5RS-B149355

Formula C15H14N2O5 MW 302.29
COA per lot
Butanoic acid, 2-[(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)oxy]-3-methyl-, (2R)-

CAS 310404-44-5RS-B149337

Formula C13H13NO5 MW 263.25
COA per lot
Butanoic acid, 2-[(1,3-dihydro-1,3-dioxo-2H-isoindol-2-yl)oxy]-3-methyl-, 1,1-dimethylethyl ester, (2R)-

CAS 380886-38-4RS-B149349

Formula C17H21NO5 MW 319.36
COA per lot
Butanoic acid, 2-[(1-oxido-2-pyridinyl)amino]-, (S)-(9CI)

CAS 16467-31-5RS-B149300

COA per lot
Butanoic acid, 2-[(1-oxohexyl)amino]-

CAS 121428-72-6RS-B149067

Formula C10H19NO3
COA per lot
Butanoic acid, 2-[(2,3,4,5-tetrahydro-3,5-dioxo-1,2,4-triazin-6-yl)amino]-(9CI)

CAS 292170-09-3RS-B149068

Formula C7H10N4O4
COA per lot
Butanoic acid, 2-[(2,3-dihydro-1,1-dioxido-3-thienyl)amino]-, (2S)-(9CI)

CAS 464154-00-5RS-B149359

COA per lot
Butanoic acid, 2-[(2-bromophenyl)methylene]-3-oxo-, methyl ester

CAS 103785-59-7RS-B149266

COA per lot
Butanoic acid, 2-[(2-methyl-1-oxo-2-propenyl)amino]-(9CI)

CAS 146267-33-6RS-B149069

Formula C8H13NO3
COA per lot
Butanoic acid, 2-[(4-broMophenyl)Methylene]-3-oxo-, ethyl ester

CAS 186682-26-8RS-B149321

COA per lot
Butanoic acid, 2-[(4-methyl-1-oxopentyl)amino]-

CAS 144301-09-7RS-B149318

COA per lot
Butanoic acid, 2-[(aminoacetyl)amino]-, (2R)-(9CI)

CAS 149751-70-2RS-B149070

Formula C6H12N2O3
COA per lot
Butanoic acid, 2-[(chloroacetyl)amino]-2-ethyl-(9CI)

CAS 104234-94-8RS-B149071

Formula C8H14ClNO3
COA per lot
Butanoic acid, 2-[(chloroacetyl)ethylamino]-(9CI)

CAS 138062-78-9RS-B149072

Formula C8H14ClNO3
COA per lot
Butanoic acid, 2-[(chloroacetyl)methylamino]-(9CI)

CAS 138062-77-8RS-B149073

Formula C7H12ClNO3
COA per lot
Butanoic acid, 2-[(cyclopentylcarbonyl)amino]-

CAS 252678-53-8RS-B149074

Formula C10H17NO3
COA per lot
Butanoic acid, 2-[(dimethylamino)methylene]-3-oxo-4-(phenylmethoxy)-, ethyl ester

CAS 727382-68-5RS-B149075

Formula C16H21NO4
COA per lot
Butanoic acid, 2-[(ethoxycarbonyl)amino]-

CAS 121428-73-7RS-B149076

Formula C7H13NO4
COA per lot
Butanoic acid, 2-[(hydroxyacetyl)imino]-3-methyl-(9CI)

CAS 175276-19-4RS-B149077

Formula C7H11NO4
COA per lot
Butanoic acid, 2-[(hydroxyphenylacetyl)amino]-(9CI)

CAS 119154-03-9RS-B149078

Formula C12H15NO4
COA per lot
Butanoic acid, 2-[(methoxycarbonyl)amino]-, (2S)-(9CI)

CAS 259874-14-1RS-B149079

Formula C6H11NO4
COA per lot
Butanoic acid, 2-[2-(2-Methylphenyl)hydrazinylidene]-3-oxo-, ethyl ester

CAS 20532-69-8RS-B149080

Formula C13H16N2O3
COA per lot
Butanoic acid, 2-[2-(2-nitrophenyl)diazenyl]-3-oxo-, ethyl ester

CAS 33165-45-6RS-B149270

COA per lot
Butanoic acid, 2-[2-(3-nitrophenyl)hydrazinylidene]-3-oxo-, ethyl ester

CAS 18794-99-5RS-B149081

Formula C11H13N3O4
COA per lot
Butanoic acid, 2-[2-(4-chlorophenyl)hydrazinylidene]-3-oxo-, ethyl ester

CAS 18794-97-3RS-B149082

Formula C12H13ClN2O3
COA per lot
Butanoic acid, 2-[2-(4-methoxyphenyl)diazenyl]-3-oxo-,ethyl ester

CAS 18794-95-1RS-B149083

Formula C13H16N2O4
COA per lot
Butanoic acid, 2-[2-(4-nitrophenyl)hydrazinylidene]-3-oxo-, ethyl ester

CAS 18795-00-1RS-B149084

Formula C12H13N3O5
COA per lot
Butanoic acid, 2-[[(1,1-dimethylethoxy)carbonyl]amino]-, methyl ester, (2R)-

CAS 112392-65-1RS-B149085

Formula C10H19NO4
COA per lot
Butanoic acid, 2-[[(1,1-dimethylethoxy)carbonyl]amino]-4,4,4-trifluoro-, (2R)-

CAS 207118-08-9RS-B149086

Formula C9H14F3NO4
COA per lot
Butanoic acid, 2-[[(1,1-dimethylethoxy)carbonyl]amino]-4-[(methylsulfonyl)amino]-, (2S)-

CAS 1562429-86-0RS-B149008

Formula C10H20N2O6S MW 296.34
COA per lot
Butanoic acid, 2-[[(1,1-dimethylethoxy)carbonyl]amino]-4-iodo-, 1,1-dimethylethyl ester

CAS 1822511-88-5RS-B149009

Formula C13H24INO4 MW 385.24
COA per lot
Butanoic acid, 2-[[(1,1-dimethylethoxy)carbonyl]amino]-4-iodo-, 1,1-dimethylethyl ester, (2R)-

CAS 2070892-96-3RS-B149010

Formula C13H24INO4 MW 385.24
COA per lot
Butanoic acid, 2-[[(1,1-dimethylethoxy)carbonyl]amino]-4-iodo-, phenylmethyl ester, (2R)-

CAS 1286768-64-6RS-B149087

Formula C16H22INO4
COA per lot
Butanoic acid, 2-[[(1,1-dimethylethoxy)carbonyl]ethylamino]-

CAS 1341858-07-8RS-B149088

Formula C11H21NO4
COA per lot
Butanoic acid, 2-[[(2-chloro-4-pyridinyl)carbonyl]amino]-

CAS 120271-27-4RS-B149089

Formula C10H11ClN2O3
COA per lot
Butanoic acid, 2-[[(2-propen-1-yloxy)carbonyl]amino]-, (2R)-

CAS 793718-15-7RS-B149011

Formula C8H13NO4 MW 187.19
COA per lot
Butanoic acid, 2-[[(5-hydroxy-3-pyridinyl)carbonyl]amino]-

CAS 112193-37-0RS-B149090

Formula C10H12N2O4
COA per lot
Butanoic acid, 2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-4,4-difluoro-, (2R)-

CAS 1262802-55-0RS-B149091

Formula C19H17F2NO4
COA per lot
Butanoic acid, 2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-4-(methylseleno)-, (2R)-

CAS 1369531-99-6RS-B149092

Formula C20H21NO4Se
COA per lot
Butanoic acid, 2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-4-[[imino[[(4-methoxy-2,3,6-trimethylphenyl)sulfonyl]amino]methyl]amino]-, (2S)-

CAS 1313054-68-0RS-B149093

Formula C30H34N4O7S
COA per lot
Butanoic acid, 2-[[(9H-fluoren-9-ylmethoxy)carbonyl]methylamino]-4,4,4-trifluoro-, (2S)-

CAS 2642726-10-9RS-B149094

Formula C20H18F3NO4
COA per lot
Butanoic acid, 2-[[1-[[[1-(1H-benzimidazol-2-yl)-2-methylpropyl]amino]carbonyl]-3-phenylpropyl]amino]-4-[[(4-methylphenyl)sulfonyl]amino]-, methyl ester, [2R-[2R*[S*(S*)]]]-(9CI)

CAS 184685-23-2RS-B149095

Formula C33H41N5O5S
COA per lot
Butanoic acid, 2-[[2-[(aminoacetyl)amino]-1-oxobutyl]amino]-(9CI)

CAS 114148-85-5RS-B149096

Formula C10H19N3O4
COA per lot
Butanoic acid, 2-[[2-acetyl-1-(1-methylethyl)hydrazinyl]methylene]-4,4-difluoro-3-oxo-, ethyl ester, (2Z)-

CAS 1810871-59-0RS-B149271

COA per lot
Butanoic acid, 2-[[[(1,1-dimethylethoxy)carbonyl]amino]methyl]-

CAS 1488895-18-6RS-B149097

Formula C10H19NO4
COA per lot
Butanoic acid, 2-[[[(2-amino-1-oxobutyl)amino]acetyl]amino]-(9CI)

CAS 114183-55-0RS-B149098

Formula C10H19N3O4
COA per lot
Butanoic acid, 2-[acetyl[(2-oxo-1-pyrrolidinyl)methyl]amino]-

CAS 297761-73-0RS-B149099

Formula C11H18N2O4
COA per lot
BUTANOIC ACID, 2-ACETYL-3-OXO-

CAS 4433-82-3RS-B149353

Formula C6H8O4 MW 144.13
COA per lot
Butanoic acid, 2-amino-, N-coco alkyl derivs., monosodium salts

CAS 61791-62-6RS-B149278

COA per lot
Butanoic acid, 2-amino-3,3-difluoro-, methyl ester (9CI)

CAS 140647-77-4RS-B149101

Formula C5H9F2NO2
COA per lot
Butanoic acid, 2-amino-3-(ethylthio)-(9CI)

CAS 153312-12-0RS-B149102

Formula C6H13NO2S
COA per lot
Butanoic acid, 2-amino-3-[(carboxycarbonyl)amino]-

CAS 184646-39-7RS-B149103

Formula C6H10N2O5
COA per lot
Butanoic acid, 2-amino-4,4,4-trifluoro-, hydrochloride (1:1), (2S)-

CAS 2178121-18-9RS-B149104

Formula C4H6F3NO2
COA per lot
Butanoic acid, 2-aMino-4,4,4-trifluoro-3-oxo-, ethyl ester

CAS 122019-58-3RS-B149100

Formula C6H8F3NO3
COA per lot
Butanoic acid, 2-amino-4,4-dicyano-, (S)-(9CI)

CAS 126433-38-3RS-B149311

COA per lot
Butanoic acid, 2-amino-4,4-difluoro-, (R)-

CAS 185348-78-1RS-B149105

Formula C4H7F2NO2
COA per lot
Butanoic acid, 2-amino-4-(carboxyamino)-(9CI)

CAS 134579-52-5RS-B149107

Formula C5H10N2O4
COA per lot
Butanoic acid, 2-amino-4-(hydroxymethylphosphinyl)-, ammonium salt, (2S)-(9CI)

CAS 87314-96-3RS-B149261

COA per lot
Butanoic acid, 2-amino-4-(methylsulfinyl)-, (R*,R*)-(9CI)

CAS 121249-47-6RS-B149306

COA per lot
Butanoic acid, 2-amino-4-(S-methylsulfinimidoyl)-(9CI)

CAS 1115-85-1RS-B149106

Formula C5H12N2O2S
COA per lot
Butanoic acid, 2-amino-4-(S-methylsulfinimidoyl)-, (2S)-(9CI)

CAS 19243-29-9RS-B149301

COA per lot
Butanoic acid, 2-amino-4-(thiocarboxy)-, (S)-(9CI)

CAS 141817-15-4RS-B149108

Formula C5H9NO3S
COA per lot
Butanoic acid, 2-amino-4-[(4-aminobutyl)amino]-

CAS 61715-48-8RS-B149012

Formula C8H19N3O2 MW 189.26
COA per lot
Butanoic acid, 2-amino-4-[(aminocarbonyl)amino]-

CAS 7419-40-1RS-B149267

COA per lot
BUTANOIC ACID, 2-AMINO-4-[(S)-[(2R)-2-AMINO-2-CARBOXYETHYL]SULFINYL]-, (2S)-

CAS 210647-25-9RS-B149041

Formula C7H14N2O5S
COA per lot
Butanoic acid, 2-amino-4-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-, 1,1-dimethylethyl ester, hydrochloride (1:1), (2S)-

CAS 2301859-03-8RS-B149013

Formula C23H29ClN2O4 MW 432.9
COA per lot
Butanoic acid, 2-amino-4-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-, phenylmethyl ester, hydrochloride (1:1), (2R)-

CAS 2044710-84-9RS-B149109

Formula C26H26N2O4
COA per lot
Butanoic acid, 2-amino-4-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-, phenylmethyl ester, hydrochloride (1:1), (2S)-

CAS 2044704-46-1RS-B149110

Formula C26H26N2O4
COA per lot
Butanoic acid, 2-amino-4-borono-, 1-methyl ester, (2S)-(9CI)

CAS 390402-06-9RS-B149351

Formula C5H12BNO4 MW 160.97
COA per lot
Butanoic acid, 2-amino-4-nitro-, methyl ester (9CI)

CAS 245368-86-9RS-B149326

COA per lot
Butanoic acid, 2-bromo-, 2-cyanoethyl ester (9CI)

CAS 131792-97-7RS-B149111

Formula C7H10BrNO2
COA per lot
Butanoic acid, 2-bromo-3-methyl-, 1,1-dimethylethyl ester

CAS 42877-95-2RS-B149354

Formula C9H17BrO2 MW 237.14
COA per lot
Butanoic acid, 2-broMo-3-oxo-, 1,1-diMethylethyl ester

CAS 36082-04-9RS-B149331

Formula C8H13BrO3 MW 237.09
COA per lot
Butanoic acid, 2-cyano-3-fluoro-2-hydroxy-3-methyl-, ethyl ester (9CI)

CAS 153431-42-6RS-B149112

Formula C8H12FNO3
COA per lot
Butanoic acid, 2-cyano-4,4-diethoxy-, methyl ester (9CI)

CAS 343633-25-0RS-B149344

Formula C10H17NO4 MW 215.25
COA per lot
Butanoic acid, 2-cyano-4,4-dimethoxy-, methyl ester (9CI)

CAS 113410-42-7RS-B149113

Formula C8H13NO4
COA per lot
Butanoic acid, 2-cyano-4-methoxy-3-methyl-, methyl ester (9CI)

CAS 206271-46-7RS-B149324

COA per lot
Butanoic acid, 2-diazo-4,4-difluoro-3-oxo-, ethyl ester

CAS 107910-16-7RS-B149114

Formula C6H6F2N2O3
COA per lot
Butanoic acid, 2-ethyl-, pentyl ester

CAS 5129-49-7RS-B149014

Formula C11H22O2 MW 186.29
COA per lot
Butanoic acid, 2-ethyl-2-[(1-oxo-2-propenyl)amino]-(9CI)

CAS 111818-56-5RS-B149115

Formula C9H15NO3
COA per lot
Butanoic acid, 2-ethyl-2-[(1-oxobutyl)amino]-

CAS 141745-60-0RS-B149116

Formula C10H19NO3
COA per lot
Butanoic acid, 2-ethyl-2-[(1-oxopentyl)amino]-

CAS 141745-72-4RS-B149117

Formula C11H21NO3
COA per lot
Butanoic acid, 2-ethyl-3-oxo-, hydrazide (9CI)

CAS 216879-60-6RS-B149327

COA per lot
Butanoic acid, 2-fluoro-2-methyl-3-oxo-, ethyl ester

CAS 122795-13-5RS-B149118

Formula C7H11FO3
COA per lot
Butanoic acid, 2-fluoro-3-Methyl-, Methyl ester

CAS 135359-27-2RS-B149315

COA per lot
Butanoic acid, 2-hydrazino-3-methyl-, ethyl ester (9CI)

CAS 3990-19-0RS-B149015

Formula C7H16N2O2 MW 160.21
COA per lot
Butanoic acid, 2-hydroxy-2,3,3-trimethyl-, (2S)-

CAS 918-10-5RS-B149272

COA per lot
Butanoic acid, 2-hydroxy-2-methyl-3-oxo-, (R)-(9CI)

CAS 26011-30-3RS-B149119

Formula C5H8O4
COA per lot
Butanoic acid, 2-hydroxy-3-methyl-, 1,1-dimethylethyl ester

CAS 2528-17-8RS-B149120

Formula C9H18O3
COA per lot
Butanoic acid, 2-hydroxy-3-oxo-(9CI)

CAS 37520-05-1RS-B149332

Formula C4H6O4 MW 118.09
COA per lot
Butanoic acid, 2-hydroxy-3-oxo-, (2R)-(9CI)

CAS 335265-55-9RS-B149341

COA per lot
Butanoic acid, 2-hydroxy-3-oxo-, (2S)-(9CI)

CAS 335265-54-8RS-B149342

COA per lot
Butanoic acid, 2-hydroxy-4-(methylseleno)-, (2S)-

CAS 873660-46-9RS-B149121

Formula C5H10O3Se
COA per lot
Butanoic acid, 2-hydroxy-4-(methylsulfonyl)-

CAS 645-97-6RS-B149275

COA per lot
Butanoic acid, 2-mercapto-, methyl ester

CAS 132958-57-7RS-B149122

Formula C5H10O2S
COA per lot
Butanoic acid, 2-methoxy-3-methyl-, (2R)-

CAS 1447943-84-1RS-B149123

Formula C6H12O3
COA per lot
Butanoic acid, 2-methyl-, (1S,7R,8R,8aR)-1,2,6,7,8,8a-hexahydro-7-methyl-6-oxo-8-[2-[(2R,4R)-tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl]ethyl]-1-naphthalenyl ester, (2S)-

CAS 1114834-76-2RS-B149124

Formula C23H32O6
COA per lot
Butanoic acid, 2-methyl-, 2-furanylmethyl ester

CAS 13678-61-0RS-B149125

Formula C10H14O3
COA per lot
Butanoic acid, 2-methyl-, 4-piperidinyl ester (9CI)

CAS 381725-65-1RS-B149350

Formula C10H19NO2 MW 185.27
COA per lot
Butanoic acid, 2-methyl-, 5-hexen-1-yl ester

CAS 155514-23-1RS-B149126

Formula C11H20O2
COA per lot
Butanoic acid, 2-methylcyclohexyl ester, trans-

CAS 15287-80-6RS-B149127

Formula C11H20O2
COA per lot
Butanoic acid, 2-methylhexyl ester

CAS 139087-69-7RS-B149016

Formula C11H22O2 MW 186.29
COA per lot
Butanoic acid, 2-oxo-, 2-phenoxyethyl ester

CAS 60359-43-5RS-B149128

Formula C12H14O4
COA per lot
Butanoic acid, 2-oxo-, potassiuM salt

CAS 13287-96-2RS-B149299

COA per lot
Butanoic acid, 3,3-difluoro-2-methyl-

CAS 1783699-15-9RS-B149129

Formula C5H8F2O2
COA per lot
Butanoic acid, 3,3-difluoro-2-oxo-, ethyl ester

CAS 165544-34-3RS-B149130

Formula C6H8F2O3
COA per lot
Butanoic acid, 3,4-dihydroxy-, methyl ester, (3R)-

CAS 114819-45-3RS-B149131

Formula C5H10O4
COA per lot
Butanoic acid, 3-(acetylamino)-2-oxo-, ethyl ester

CAS 454426-80-3RS-B149360

Formula C8H13NO4 MW 187.19
COA per lot
Butanoic acid, 3-(dimethylamino)-3-methyl-

CAS 855296-25-2RS-B149017

Formula C7H15NO2 MW 145.2
COA per lot
Butanoic acid, 3-(hydroxymethyl)-3-methyl-, 1-methylethyl ester

CAS 1803586-43-7RS-B149132

Formula C9H18O3
COA per lot
Butanoic acid, 3-(methylamino)-, hydrochloride (1:1)

CAS 785836-38-6RS-B149133

Formula C5H11NO2
COA per lot
Butanoic acid, 3-[(2-aminoethyl)thio]-, ethyl ester

CAS 1250216-49-9RS-B149018

Formula C8H17NO2S MW 191.29
COA per lot
Butanoic acid, 3-[(2-ethoxy-2-oxoethyl)amino]-, ethyl ester

CAS 861534-53-4RS-B149276

COA per lot
Butanoic acid, 3-[(3-methoxy-3-oxopropyl)amino]-3-methyl-, methyl ester

CAS 1461707-02-7RS-B149019

Formula C10H19NO4 MW 217.26
COA per lot
Butanoic acid, 3-[(methoxycarbonyl)amino]-, methyl ester

CAS 116173-72-9RS-B149137

Formula C7H13NO4
COA per lot
Butanoic acid, 3-[(methoxycarbonyl)amino]-2-methyl-, methyl ester

CAS 344407-17-6RS-B149345

COA per lot
Butanoic acid, 3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-hydroxy-(9CI)

CAS 211746-09-7RS-B149138

Formula C9H17NO5
COA per lot
Butanoic acid, 3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-hydroxy-, (2R,3S)-

CAS 174282-97-4RS-B149139

Formula C9H17NO5
COA per lot
Butanoic acid, 3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-hydroxy-, (2S,3S)-

CAS 174282-86-1RS-B149140

Formula C9H17NO5
COA per lot
Butanoic acid, 3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-methyl-, (2R,3S)-

CAS 186494-10-0RS-B149322

COA per lot
Butanoic acid, 3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-methyl-, (2S,3S)-

CAS 186494-09-7RS-B149323

COA per lot
Butanoic acid, 3-[[(1,1-dimethylethoxy)carbonyl]amino]-4-(phenylmethoxy)-

CAS 1824339-94-7RS-B149020

Formula C16H23NO5 MW 309.36
COA per lot
Butanoic acid, 3-[[(1,1-dimethylethoxy)carbonyl]amino]-4-hydroxy-

CAS 942297-58-7RS-B149021

Formula C9H17NO5 MW 219.23
COA per lot
Butanoic acid, 3-[[(1,1-dimethylethoxy)carbonyl]amino]-4-oxo-4-[(2-phenylethyl)amino]-, phenylmethyl ester, (3S)-

CAS 108279-08-9RS-B149262

COA per lot
Butanoic acid, 3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-, methyl ester, (3R)-

CAS 104524-19-8RS-B149141

Formula C11H24O3Si
COA per lot
Butanoic acid, 3-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-2,3-dimethyl-, (2R)-

CAS 2350606-63-0RS-B149022

Formula C21H23NO4 MW 353.4
COA per lot
Butanoic acid, 3-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-2,3-dimethyl-, (2S)-

CAS 2349598-87-2RS-B149023

Formula C21H23NO4 MW 353.4
COA per lot
Butanoic acid, 3-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-4-hydroxy-, (3R)-

CAS 848368-97-8RS-B149142

Formula C19H19NO5
COA per lot
Butanoic acid, 3-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-4-oxo-, 1,1-dimethylethyl ester, (3S)-

CAS 146803-45-4RS-B149143

Formula C23H25NO5
COA per lot
Butanoic acid, 3-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-4-phenoxy-, (3R)-

CAS 2349622-28-0RS-B149024

Formula C25H23NO5 MW 417.5
COA per lot
Butanoic acid, 3-[[4-(aminosulfonyl)-2-[(trifluoromethyl)sulfonyl]phenyl]amino]-4-(phenylthio)-, methyl ester, (3R)-

CAS 1357575-02-0RS-B149025

Formula C18H19F3N2O6S3 MW 512.6
COA per lot
Butanoic acid, 3-[[[(1,1-dimethylethoxy)carbonyl]amino]methyl]-4,4,4-trifluoro-

CAS 2228922-25-4RS-B149144

Formula C10H16F3NO4
COA per lot
Butanoic acid, 3-aMino-, ethyl ester, hydrochloride, (3S)-

CAS 187876-47-7RS-B149145

Formula C6H13NO2
COA per lot
Butanoic acid, 3-amino-, N-C8-18-alkyl derivs., compds. with sulfonated nigrosine spirit soluble

CAS 97660-33-8RS-B149279

COA per lot
Butanoic acid, 3-amino-2-[[(1,1-dimethylethoxy)carbonyl]amino]-, (2S,3S)-

CAS 1584671-66-8RS-B149147

Formula C9H18N2O4
COA per lot
Butanoic acid, 3-amino-2-cyano-2-hydroxy-3-methyl-

CAS 35768-30-0RS-B149330

COA per lot
Butanoic acid, 3-amino-2-hydroxy-, methyl ester

CAS 106746-17-2RS-B149148

Formula C5H11NO3
COA per lot
Butanoic acid, 3-amino-4-(dimethylamino)-, methyl ester, (3R)-(9CI)

CAS 362704-90-3RS-B149348

COA per lot
Butanoic acid, 3-amino-4-[(2,2-diethoxyethyl)(2-phenylethyl)amino]-4-oxo-, methyl ester, (3S)-

CAS 1951425-01-6RS-B149149

Formula C19H30N2O5
COA per lot
Butanoic acid, 3-amino-4-[(4-methyl-2-oxo-2H-1-benzopyran-7-yl)amino]-4-oxo-, 1,1-dimethylethyl ester, (3R)-

CAS 2044711-03-5RS-B149150

Formula C18H22N2O5
COA per lot
Butanoic acid, 3-amino-4-[(4-methyl-2-oxo-2H-1-benzopyran-7-yl)amino]-4-oxo-, 1,1-dimethylethyl ester, (3S)-

CAS 149231-64-1RS-B149151

Formula C18H22N2O5
COA per lot
Butanoic acid, 3-amino-4-[[(1,1-dimethylethoxy)carbonyl]amino]-, methyl ester

CAS 1391209-85-0RS-B149152

Formula C10H20N2O4
COA per lot
Butanoic acid, 3-aMino-4-[[3-(4-chlorobenzoyl)-4,5-diMethyl-2-thienyl]aMino]-4-oxo-, 1,1-diMethylethyl ester, (3S)-

CAS 1268524-66-8RS-B149146

Formula C21H25ClN2O4S
COA per lot
Butanoic acid, 3-amino-4-oxo-4-[(2-phenylethyl)amino]-, phenylmethyl ester, (S)-(9CI)

CAS 108279-23-8RS-B149263

COA per lot
Butanoic acid, 3-bromo-3-methyl-2-oxo-

CAS 72450-35-2RS-B149026

Formula C5H7BrO3 MW 195.01
COA per lot
Butanoic acid, 3-bromo-4-oxo-, methyl ester

CAS 16565-77-8RS-B149153

Formula C5H7BrO3
COA per lot
Butanoic acid, 3-chloro-2-oxo-, methyl ester

CAS 267883-53-4RS-B149154

Formula C5H7ClO3
COA per lot
Butanoic acid, 3-chloro-3-methyl-2-oxo-, methyl ester

CAS 190896-16-3RS-B149155

Formula C6H9ClO3
COA per lot
Butanoic acid, 3-cyano-2-oxo-, ethyl ester

CAS 524729-53-1RS-B149027

Formula C7H9NO3 MW 155.15
COA per lot
Butanoic acid, 3-cyano-3-methyl-, ethyl ester

CAS 100568-19-2RS-B149028

Formula C8H13NO2 MW 155.19
COA per lot
Butanoic acid, 3-hydroxy-, (1R)-3-methoxy-1-methyl-3-oxopropyl ester, (3R)-

CAS 195453-29-3RS-B149273

COA per lot
Butanoic acid, 3-hydroxy-, (1R,2S,5R)-5-methyl-2-(1-methylethyl)cyclohexyl ester, (3S)-

CAS 115869-76-6RS-B149156

Formula C14H26O3
COA per lot
Butanoic acid, 3-hydroxy-, (3S)-3-hydroxybutyl ester, (3S)-

CAS 1251829-99-8RS-B149157

Formula C8H16O4
COA per lot
Butanoic acid, 3-hydroxy-, 2-methylpropyl ester

CAS 85762-19-2RS-B149158

Formula C8H16O3
COA per lot
Butanoic acid, 3-hydroxy-, calcium salt (2:1), (3R)-

CAS 2138463-93-9RS-B149328

COA per lot
Butanoic acid, 3-hydroxy-2-methyl-, methyl ester, (2R,3R)-

CAS 66767-61-1RS-B149159

Formula C6H12O3
COA per lot
Butanoic acid, 3-hydroxy-2-methyl-, methyl ester, (2R,3S)-

CAS 65830-32-2RS-B149160

Formula C6H12O3
COA per lot
Butanoic acid, 3-hydroxy-2-methyl-, methyl ester, (2S,3S)-

CAS 66767-60-0RS-B149161

Formula C6H12O3
COA per lot
Butanoic acid, 3-hydroxy-3-methyl-, phenylmethyl ester

CAS 37526-90-2RS-B149162

Formula C12H16O3
COA per lot
BUTANOIC ACID, 3-HYDROXY-4-(TRIPHENYLMETHOXY)-, METHYL ESTER, (R)

CAS 144754-24-5RS-B149042

Formula C24H24O4
COA per lot
BUTANOIC ACID, 3-HYDROXY-4-(TRIPHENYLMETHOXY)-, METHYL ESTER, (S)

CAS 113240-53-2RS-B149043

Formula C24H24O4
COA per lot
BUTANOIC ACID, 3-HYDROXY-4-IODO-, ETHYL ESTER, (S)

CAS 112100-39-7RS-B149044

Formula C6H11IO3
COA per lot
Butanoic acid, 3-hydroxy-4-methoxy-3-methyl-

CAS 854851-93-7RS-B149029

Formula C6H12O4 MW 148.16
COA per lot
Butanoic acid, 3-methyl-, (1S,3S,5Z,7R,8E,11R,13E,15S,17R,21R,23R,25S)-1,11,21-trihydroxy-17-(1R)-1-hydroxyethyl-5,13-bis(2-methoxy-2-oxoethylidene)-10,10,26,26-tetramethyl-19-oxo-18,27,28,29-tetraoxatetracyclo21.3.1.13,7.111,15nonacos-8-en-25-yl ester

CAS 102580-65-4RS-B149163

Formula C42H64O15
COA per lot
Butanoic acid, 3-Methyl-, 1,1-diMethylethyl ester

CAS 16792-03-3RS-B149134

Formula C9H18O2
COA per lot
Butanoic acid, 3-Methyl-, 1-ethylbutyl ester

CAS 121862-15-5RS-B149307

COA per lot
Butanoic acid, 3-Methyl-, 1-Methylbutyl ester

CAS 117421-34-8RS-B149135

Formula C10H20O2
COA per lot
Butanoic acid, 3-methyl-, 2-(aminothioxomethyl)hydrazide

CAS 113836-66-1RS-B149303

COA per lot
Butanoic acid, 3-Methyl-, 2-Methylphenyl ester

CAS 105401-62-5RS-B149304

COA per lot
Butanoic acid, 3-Methyl-, 3-Methylphenyl ester

CAS 105401-73-8RS-B149136

Formula C12H16O2
COA per lot
Butanoic acid, 3-methyl-, hexahydro-7-((3-methyl-1-oxobutoxy)methyl)-1 H-pyrrolizin-1-yl ester, (1R-(1alpha,7alpha,7abeta))-

CAS 39818-21-8RS-B149335

Formula C18H31NO4 MW 325.45
COA per lot
Butanoic acid, 3-oxo-, (3-methoxyphenyl)methyl ester

CAS 1430815-65-8RS-B149164

Formula C12H14O4
COA per lot
Butanoic acid, 3-oxo-, 1-methylethenyl ester

CAS 93304-66-6RS-B149165

Formula C7H10O3
COA per lot
Butanoic acid, 3-oxo-, 2-(2-methyl-1-oxo-2-propenyl)oxyethyl ester, polymer with 2-ethylhexyl 2-propenoate, methyl 2-methyl-2-propenoate and 2-propenoic acid

CAS 146186-13-2RS-B149319

COA per lot
Butanoic acid, 3-oxo-, 2-(2-methyl-1-oxo-2-propenyl)oxyethyl ester, polymer with butyl 2-methyl-2-propenoate and oxiranylmethyl 2-methyl-2-propenoate

CAS 114615-85-9RS-B149305

COA per lot
Butanoic acid, 3-oxo-, 2-(2-methyl-1-oxo-2-propenyl)oxyethyl ester, polymer with butyl 2-propenoate, ethenylbenzene, 2-hydroxyethyl 2-methyl-2-propenoate and methyl 2-methyl-2-propenoate

CAS 128679-47-0RS-B149313

COA per lot
Butanoic acid, 3-oxo-, 2-(2-methyl-1-oxo-2-propenyl)oxyethyl ester, polymer with butyl 2-propenoate, ethenylbenzene, 2-hydroxyethyl 2-propenoate and methyl 2-methyl-2-propenoate

CAS 136016-63-2RS-B149317

COA per lot
Butanoic acid, 3-oxo-, 2-(2-methyl-1-oxo-2-propenyl)oxyethyl ester, polymer with ethenylbenzene, 2-ethylhexyl 2-propenoate and oxiranylmethyl 2-methyl-2-propenoate

CAS 178861-75-1RS-B149320

COA per lot
BUTANOIC ACID, 3-OXO-, 2-[(1,3-DIOXOBUTOXY)METHYL]-2-ETHYL-1,3-PROPANDIYL ESTER

CAS 22208-25-9RS-B149045

Formula C18H26O9
COA per lot
Butanoic acid, 3-oxo-, 2-propenyl ester, polymer with butyl 2-propenoate, ethenyl acetate and sodium ethenesulfonate

CAS 123805-12-9RS-B149308

COA per lot
Butanoic acid, 3-oxo-, 2-propenyl ester, polymer with butyl 2-propenoate, methyl 2-methyl-2-propenoate, 2-methyl-2-propenoic acid and 2-propenoic acid

CAS 119209-72-2RS-B149309

COA per lot
Butanoic acid, 3-oxo-, 3-(trimethoxysilyl)propyl ester

CAS 121505-13-3RS-B149166

Formula C10H20O6Si
COA per lot
Butanoic acid, 3-oxo-, ethyl ester, polymer with 2,2-dimethyl-1,3-propanediol and 2-propanol aluminum salt

CAS 115271-29-9RS-B149310

COA per lot
Butanoic acid, 3-oxo-, ethyl ester, reaction products with ethylene glycol

CAS 90268-50-1RS-B149280

COA per lot
Butanoic acid, 3-oxo-, ethyl ester, reaction products with exo-1,7,7-trimethylbicyclo[2.2.1]hept-2-yl acetate

CAS 96633-55-5RS-B149292

COA per lot
Butanoic acid, 3-oxo-, ethyl ester, reaction products with propylene glycol

CAS 90268-51-2RS-B149281

COA per lot
Butanoic acid, 3-oxo-,2-[(3,3-diphenylpropyl)MethylaMino]-1,1-diMethylethyl ester

CAS 100427-51-8RS-B149167

Formula C24H31NO3
COA per lot
Butanoic acid, 3-oxo-2-(phenylmethylene)-, ethyl ester, (2Z)-

CAS 15802-63-8RS-B149168

Formula C13H14O3
COA per lot
Butanoic acid, 3-oxo-2-[(1-oxopropyl)amino]-, methyl ester

CAS 136682-44-5RS-B149316

COA per lot
Butanoic acid, 4,4,4-trifluoro-2,3-dioxo-, ethyl ester

CAS 3885-39-0RS-B149169

Formula C6H5F3O4
COA per lot
Butanoic acid, 4,4,4-trifluoro-3-methyl-, (+)-

CAS 162878-31-1RS-B149264

COA per lot
Butanoic acid, 4,4-difluoro-, ethyl ester

CAS 1240725-43-2RS-B149170

Formula C6H10F2O2
COA per lot
Butanoic acid, 4,4-difluoro-2-methyl-3-oxo-, ethyl ester

CAS 425394-84-9RS-B149357

Formula C7H10F2O3 MW 180.15
COA per lot
Butanoic acid, 4-(1,1-dimethylethoxy)-3-[[(phenylmethoxy)carbonyl]amino]-, (3R)-

CAS 2350078-91-8RS-B149171

Formula C16H23NO5
COA per lot
Butanoic acid, 4-(2-hydroxy-5-(1-oxopropyl)phenoxy)-

CAS 137150-48-2RS-B149172

Formula C13H16O5
COA per lot
Butanoic acid, 4-(2-hydroxyethoxy)-, 1,1-dimethylethyl ester

CAS 1824465-84-0RS-B149173

Formula C10H20O4
COA per lot
Butanoic acid, 4-(2-methoxyethoxy)-3-oxo-, ethyl ester

CAS 130611-26-6RS-B149174

Formula C9H16O5
COA per lot
Butanoic acid, 4-(3-acetylphenoxy)-, ethyl ester

CAS 756485-01-5RS-B149175

Formula C14H18O4
COA per lot
Butanoic acid, 4-(4-amino-2,6-dimethoxyphenoxy)-, methyl ester

CAS 159645-66-6RS-B149176

Formula C13H19NO5
COA per lot
Butanoic acid, 4-(4-formyl-2-methoxy-5-nitrophenoxy)-

CAS 263758-69-6RS-B149030

Formula C12H13NO7 MW 283.23
COA per lot
Butanoic acid, 4-(4-formyl-2-methoxy-5-nitrophenoxy)-, methyl ester

CAS 176375-42-1RS-B149177

Formula C13H15NO7
COA per lot
Butanoic acid, 4-(4-hydroxy-5-oxo-2(5H)-furanylidene)-3-oxo-, methyl ester, (4E)-(9CI)

CAS 351069-92-6RS-B149347

Formula C9H8O6 MW 212.16
COA per lot
Butanoic acid, 4-(acetylamino)-, 2-propenyl ester (9CI)

CAS 132237-21-9RS-B149178

Formula C9H15NO3
COA per lot
Butanoic acid, 4-(acetylamino)-2-[[(1,1-dimethylethoxy)carbonyl]amino]-, (2S)-

CAS 1562429-84-8RS-B149179

Formula C11H20N2O5
COA per lot
Butanoic acid, 4-(acetyloxy)-2-chloro-, methyl ester (9CI)

CAS 112343-32-5RS-B149180

Formula C7H11ClO4
COA per lot
Butanoic acid, 4-(acetylthio)-, 2,5-dioxo-1-pyrrolidinyl ester

CAS 1204586-28-6RS-B149181

Formula C10H13NO5S
COA per lot
Butanoic acid, 4-(bromotriphenylphosphoranyl)-, ethyl ester

CAS 1201147-00-3RS-B149182

Formula C24H26BrO2P
COA per lot
Butanoic acid, 4-(diMethylaMino)-, Methyl ester, hydrochloride

CAS 2281-02-9RS-B149183

Formula C7H16NO2+
COA per lot
Butanoic acid, 4-(dimethylamino)-2-[[(1,1-dimethylethoxy)carbonyl]amino]-, (2R)-

CAS 2349645-02-7RS-B149031

Formula C11H22N2O4 MW 246.3
COA per lot
Butanoic acid, 4-(dimethylamino)-2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-, (2S)-

CAS 949572-13-8RS-B149184

Formula C21H24N2O4
COA per lot
Butanoic acid, 4-(dimethylamino)-2-hydroxy-

CAS 1699374-86-1RS-B149185

Formula C6H13NO3
COA per lot
Butanoic acid, 4-(dimethylamino)-3-[[(9H-fluoren-9-ylmethoxy)carbonyl]methylamino]-4-oxo-, (3S)-

CAS 2430019-25-1RS-B149032

Formula C22H24N2O5 MW 396.4
COA per lot
Butanoic acid, 4-(dimethylamino)-3-[[(9H-fluoren-9-ylmethoxy)carbonyl]methylamino]-4-oxo-, 2-propen-1-yl ester, (3S)-

CAS 2430019-26-2RS-B149186

Formula C25H28N2O5
COA per lot
Butanoic acid, 4-(dodecylamino)-4-oxo-, sodium salt (1:1)

CAS 39987-31-0RS-B149265

COA per lot
Butanoic acid, 4-(ethylamino)-4-oxo-3-[(1-oxododecyl)amino]-, (3S)-

CAS 2007921-26-6RS-B149187

Formula C18H34N2O4
COA per lot
Butanoic acid, 4-(methyl(2,4,6-triiodo-3-propoxyphenyl)amino)-4-oxo-

CAS 37938-64-0RS-B149333

Formula C14H16I3NO4 MW 643
COA per lot
Butanoic acid, 4-(octadecylamino)-4-oxosulfo-, sodium salt

CAS 52871-18-8RS-B149298

Formula C22H41NO6S-2 MW 447.64
COA per lot
Butanoic acid, 4-?[(4,?6-?diamino-?1,?3,?5-?triazin-?2-?yl)?amino]?-

CAS 1193812-77-9RS-B149268

COA per lot
Butanoic acid, 4-[(1,4,5,6-tetrahydro-4,6-dioxo-2-pyrimidinyl)amino]-(9CI)

CAS 299927-64-3RS-B149188

Formula C8H11N3O4
COA per lot
Butanoic acid, 4-[(1-carboxyethyl)amino]-

CAS 90159-84-5RS-B149033

Formula C7H13NO4 MW 175.18
COA per lot
Butanoic acid, 4-[(1-oxido-2-pyridinyl)amino]-(9CI)

CAS 17859-48-2RS-B149189

Formula C9H12N2O3
COA per lot
Butanoic acid, 4-[(2,2-dimethoxyethyl)amino]-4-oxo-, methyl ester

CAS 249913-42-6RS-B149190

Formula C9H17NO5
COA per lot
Butanoic acid, 4-[(2,3,4,5-tetrahydro-3,5-dioxo-1,2,4-triazin-6-yl)amino]-(9CI)

CAS 449793-30-0RS-B149361

Formula C7H10N4O4 MW 214.18
COA per lot
Butanoic acid, 4-[(2,4-diMethylphenyl)aMino]-, ethyl ester

CAS 1259393-29-7RS-B149191

Formula C14H21NO2
COA per lot
Butanoic acid, 4-[(2,5-dioxo-1-pyrrolidinyl)oxy]-4-oxo-, methyl ester

CAS 52787-46-9RS-B149192

Formula C9H11NO6
COA per lot
Butanoic acid, 4-[(2-hydroxyethyl)amino]-4-oxosulfo-, N-tallow alkyl derivs., disodium salts

CAS 61791-35-3RS-B149282

Formula C6H9NO7S-2 MW 239.2
COA per lot
Butanoic acid, 4-[(2-methoxyethyl)[4-(5,6,7,8-tetrahydro-1,8-naphthyridin-2-yl)butyl]amino]-2-(4-quinazolinylamino)-, (2S)-

CAS 2376257-44-0RS-B149193

Formula C27H36N6O3
COA per lot
Butanoic acid, 4-[(4-amino-1,2,3,6-tetrahydro-1-methyl-2,6-dioxo-5-pyrimidinyl)amino]-4-oxo-

CAS 169234-54-2RS-B149194

Formula C9H12N4O5
COA per lot
Butanoic acid, 4-[(4-aminobutyl)amino]-4-oxo-

CAS 57530-97-9RS-B149195

Formula C8H16N2O3
COA per lot
Butanoic acid, 4-[(5,7-dimethyl-1,8-naphthyridin-2-yl)amino]-4-oxo-(9CI)

CAS 198221-13-5RS-B149196

Formula C14H15N3O3
COA per lot
Butanoic acid, 4-[(5-chloro-2-ethoxy-4-fluorobenzoyl)amino]-3,3-dimethyl-, ethyl ester

CAS 2316820-75-2RS-B149197

Formula C17H23ClFNO4
COA per lot
Butanoic acid, 4-[(5-chloro-4-methoxy-2-pyridinyl)amino]-4-oxo-

CAS 1427782-19-1RS-B149198

Formula C10H11ClN2O4
COA per lot
Butanoic acid, 4-[(6-amino-1,2,3,4-tetrahydro-1,3-dimethyl-2,4-dioxo-5-pyrimidinyl)amino]-4-oxo-

CAS 109418-96-4RS-B149199

Formula C10H14N4O5
COA per lot
Butanoic acid, 4-[(6-hydroxy-4,5,7-trimethyl-2-benzothiazolyl)amino]-

CAS 120164-96-7RS-B149200

Formula C14H18N2O3S
COA per lot
Butanoic acid, 4-[(6-hydroxy-4,5,7-trimethyl-2-benzothiazolyl)amino]-, ethyl ester

CAS 120164-95-6RS-B149201

Formula C16H22N2O3S
COA per lot
Butanoic acid, 4-[(6-hydroxy-4,5,7-trimethyl-2-benzothiazolyl)amino]-4-oxo-, ethyl ester

CAS 120164-76-3RS-B149202

Formula C16H20N2O4S
COA per lot
Butanoic acid, 4-[(6-methoxy-4,5,7-trimethyl-2-benzothiazolyl)amino]-, ethyl ester

CAS 120165-65-3RS-B149203

Formula C17H24N2O3S
COA per lot
Butanoic acid, 4-[(aminocarbonyl)amino]-, hydrazide

CAS 33037-04-6RS-B149329

COA per lot
Butanoic acid, 4-[(carboxycarbonyl)amino]-, 1-methyl ester

CAS 131651-31-5RS-B149204

Formula C7H11NO5
COA per lot
Butanoic acid, 4-[(carboxymethyl)[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-, 1-(2-propen-1-yl) ester

CAS 1403683-46-4RS-B149205

Formula C24H25NO6
COA per lot
Butanoic acid, 4-[(hydrazinoiminomethyl)amino]-(9CI)

CAS 339181-52-1RS-B149343

Formula C5H12N4O2 MW 160.18
COA per lot
Butanoic acid, 4-[(methoxycarbonyl)amino]-2-methyl-, methyl ester

CAS 324752-89-8RS-B149339

COA per lot
Butanoic acid, 4-[2-[[2,3-dimethyl-4-[1-[4-(2-methylpropyl)phenyl]ethoxy]benzoyl]amino]phenoxy]-

CAS 119348-12-8RS-B149206

Formula C31H37NO5
COA per lot
Butanoic acid, 4-[4-(hydroxymethyl)-2-methoxy-5-nitrophenoxy]-, methyl ester

CAS 176375-43-2RS-B149207

Formula C13H17NO7
COA per lot
Butanoic acid, 4-[[(1,1-dimethylethoxy)carbonyl]amino]-, 2,5-dioxo-1-pyrrolidinyl ester

CAS 69038-04-6RS-B149208

Formula C13H20N2O6
COA per lot
Butanoic acid, 4-[[(1,1-dimethylethoxy)carbonyl]amino]-2-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-, methyl ester, (2S)-

CAS 125218-68-0RS-B149209

Formula C25H30N2O6
COA per lot
Butanoic acid, 4-[[(1,1-dimethylethoxy)carbonyl]amino]-2-methyl-, (S)-(9CI)

CAS 205808-16-8RS-B149325

COA per lot
Butanoic acid, 4-[[(1,1-dimethylethoxy)carbonyl]amino]-3,3-dimethyl-

CAS 1310680-18-2RS-B149210

Formula C11H21NO4
COA per lot
Butanoic acid, 4-[[(1,1-dimethylethoxy)carbonyl]amino]-3-hydroxy-, (S)-(9CI)

CAS 127852-78-2RS-B149211

Formula C9H17NO5
COA per lot
Butanoic acid, 4-[[(1,1-dimethylethoxy)carbonyl]amino]-3-methyl-, (3R)-(9CI)

CAS 259857-57-3RS-B149212

Formula C10H19NO4
COA per lot
Butanoic acid, 4-[[(1,1-dimethylethyl)diphenylsilyl]oxy]-, methyl ester

CAS 179690-96-1RS-B149213

Formula C21H28O3Si
COA per lot
Butanoic acid, 4-[[(2,4-dioxo-3-pyrrolidinylidene)methyl]amino]-(9CI)

CAS 416878-37-0RS-B149356

Formula C9H12N2O4 MW 212.2
COA per lot
Butanoic acid, 4-[[(2,6-dioxocyclohexylidene)methyl]amino]-(9CI)

CAS 352548-31-3RS-B149346

Formula C11H15NO4 MW 225.24
COA per lot
Butanoic acid, 4-[[(2-amino-5-pyrimidinyl)methyl]amino]-(9CI)

CAS 109205-65-4RS-B149214

Formula C9H14N4O2
COA per lot
Butanoic acid, 4-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-, 2,5-dioxo-1-pyrrolidinyl ester

CAS 181819-43-2RS-B149215

Formula C23H22N2O6
COA per lot
Butanoic acid, 4-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-2-[(triphenylmethyl)amino]-, (2S)-

CAS 2044703-20-8RS-B149216

Formula C38H34N2O4
COA per lot
Butanoic acid, 4-[[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-2-[[(2-propen-1-yloxy)carbonyl]amino]-, (2R)-

CAS 2250027-36-0RS-B149217

Formula C23H24N2O6
COA per lot
Butanoic acid, 4-[[2-(2,6-dioxo-3-piperidinyl)-2,3-dihydro-1,3-dioxo-1H-isoindol-4-yl]amino]-

CAS 2225940-47-4RS-B149218

Formula C17H17N3O6
COA per lot
Butanoic acid, 4-[[2-(2,6-dioxo-3-piperidinyl)-2,3-dihydro-1,3-dioxo-1H-isoindol-5-yl]amino]-

CAS 2412056-31-4RS-B149219

Formula C17H17N3O6
COA per lot
Butanoic acid, 4-[[2-(2,6-dioxo-3-piperidinyl)-2,3-dihydro-1-oxo-1H-isoindol-4-yl]amino]-, 1,1-dimethylethyl ester

CAS 2338824-22-7RS-B149220

Formula C21H27N3O5
COA per lot
Butanoic acid, 4-[[2-(2-furanyl)-2-oxoethyl]amino]-

CAS 248583-21-3RS-B149221

Formula C10H13NO4
COA per lot
Butanoic acid, 4-[[2-(4-aMinophenoxy)ethyl](phenylMethyl)aMino]-

CAS 1245647-07-7RS-B149222

Formula C19H24N2O3
COA per lot
Butanoic acid, 4-[[2-(4-nitrophenoxy)ethyl](phenylMethyl)aMino]-

CAS 1245647-24-8RS-B149223

Formula C19H22N2O5
COA per lot
Butanoic acid, 4-[[2-(4-nitrophenoxy)ethyl]aMino]-

CAS 1245698-26-3RS-B149224

Formula C12H16N2O5
COA per lot
Butanoic acid, 4-[[2-[[(1,1-dimethylethoxy)carbonyl]amino]acetyl]amino]-, phenylmethyl ester

CAS 112558-73-3RS-B149034

Formula C18H26N2O5 MW 350.4
COA per lot
Butanoic acid, 4-[[2-[[(1,1-dimethylethoxy)carbonyl]methylamino]ethyl]amino]-, methyl ester

CAS 1345681-00-6RS-B149274

COA per lot
Butanoic acid, 4-[[2-[[(phenylmethoxy)carbonyl]amino]acetyl]amino]-

CAS 1320361-81-6RS-B149225

Formula C14H18N2O5
COA per lot
Butanoic acid, 4-[[2-[[(phenylmethoxy)carbonyl]amino]acetyl]amino]-, methyl ester

CAS 33062-43-0RS-B149226

Formula C15H20N2O5
COA per lot
Butanoic acid, 4-[[3,4,6-tri-O-acetyl-2-(acetylamino)-2-deoxy-β-D-galactopyranosyl]oxy]-

CAS 1019000-93-1RS-B149227

Formula C18H27NO11
COA per lot
Butanoic acid, 4-[[3-(11,12-didehydrodibenz[b,f]azocin-5(6H)-yl)-3-oxopropyl]amino]-4-oxo-, 2,5-dioxo-1-pyrrolidinyl ester

CAS 1787252-03-2RS-B149035

Formula C26H23N3O6 MW 473.5
COA per lot
Butanoic acid, 4-[[3-(4-chlorobenzoyl)-4,5-diMethyl-2-thienyl]aMino]-3-[[(9H-fluoren-9-ylMethoxy)carbonyl]aMino]-4-oxo-, 1,1-diMethylethyl ester, (3S)-

CAS 1268524-65-7RS-B149228

Formula C36H35ClN2O6S
COA per lot
Butanoic acid, 4-[[4-[2-[2,5-dimethoxy-4-[2-(4-nitrophenyl)diazenyl]phenyl]diazenyl]phenyl]methylamino]-, 2,5-dioxo-1-pyrrolidinyl ester

CAS 916753-62-3RS-B149229

Formula C29H29N7O8
COA per lot
Butanoic acid, 4-[[4-[2-[2-methoxy-5-methyl-4-[2-(4-methyl-2-nitrophenyl)diazenyl]phenyl]diazenyl]phenyl]methylamino]-

CAS 1190431-95-8RS-B149230

Formula C26H28N6O5
COA per lot
Butanoic acid, 4-[[4-ethyl-6-(1-methylethyl)-1,3,5-triazin-2-yl]thio]-

CAS 1523570-98-0RS-B149231

Formula C12H19N3O2S
COA per lot
Butanoic acid, 4-[[[(1,1-dimethylethoxy)carbonyl]amino]oxy]-(9CI)

CAS 112899-25-9RS-B149232

Formula C9H17NO5
COA per lot
Butanoic acid, 4-[[[1-oxo-16-(2H-tetrazol-5-yl)hexadecyl]amino]sulfonyl]-

CAS 873874-16-9RS-B149233

Formula C21H39N5O5S
COA per lot
Butanoic acid, 4-[[[3-methyl-1-(4-methylphenyl)-1H-pyrazol-5-yl]carbonyl]amino]-

CAS 2231303-83-4RS-B149234

Formula C16H19N3O3
COA per lot
Butanoic acid, 4-[[[4-[(2-butyl-4-oxo-1,3-diazaspiro[4.4]non-1-en-3-yl)methyl]-2'-[[(3,4-dimethyl-5-isoxazolyl)amino]sulfonyl][1,1'-biphenyl]-2-yl]methyl]amino]-2,2-dimethyl-

CAS 467423-51-4RS-B149235

Formula C36H47N5O6S
COA per lot
Butanoic acid, 4-[[[[2-(dimethylamino)ethyl]thio]carbonyl][4-[(1-heptyloctyl)oxy]-4-oxobutyl]amino]-, (2Z)-2-nonen-1-yl ester

CAS 2230211-82-0RS-B149236

Formula C37H70N2O5S
COA per lot
Butanoic acid, 4-[bis[(1,1-dimethylethoxy)carbonyl]amino]-

CAS 1628785-29-4RS-B149036

Formula C14H25NO6 MW 303.35
COA per lot
Butanoic acid, 4-[ethyl[(9H-fluoren-9-ylmethoxy)carbonyl]amino]-

CAS 1446478-30-3RS-B149237

Formula C21H23NO4
COA per lot
Butanoic acid, 4-amino-2,2-dimethyl-, 1,1-dimethylethyl ester

CAS 1872039-50-3RS-B149238

Formula C10H21NO2
COA per lot
Butanoic acid, 4-amino-2-(carboxyamino)-(9CI)

CAS 134579-53-6RS-B149239

Formula C5H10N2O4
COA per lot
Butanoic acid, 4-amino-2-hydroxy-, ethyl ester, (2S)-

CAS 731759-38-9RS-B149240

Formula C6H13NO3
COA per lot
Butanoic acid, 4-amino-3,3-dimethyl-, ethyl ester

CAS 195447-82-6RS-B149241

Formula C8H17NO2
COA per lot
Butanoic acid, 4-amino-4-(2,6-dioxocyclohexylidene)-, methyl ester (9CI)

CAS 443316-50-5RS-B149358

COA per lot
Butanoic acid, 4-amino-4-borono-(9CI)

CAS 682329-32-4RS-B149242

Formula C4H10BNO4
COA per lot
Butanoic acid, 4-amino-4-oxo-2-sulfo-, N-(beta-hydroxy-C11-14-branched alkyl) derivs., disodium salts

CAS 84836-77-1RS-B149293

COA per lot
Butanoic acid, 4-amino-4-oxo-2-sulfo-, N-(C14-18 and C16-18-unsatd. alkyl) derivs., disodium salts

CAS 93686-33-0RS-B149296

COA per lot
Butanoic acid, 4-amino-4-oxo-2-sulfo-, N-(C8-18 and C18-unsatd. alkyl) derivs., disodium salts

CAS 93686-32-9RS-B149284

COA per lot
Butanoic acid, 4-amino-4-oxo-2-sulfo-, N-[3-(C10-18-alkyloxy)propyl] derivs., disodium salts

CAS 90268-46-5RS-B149283

COA per lot
Butanoic acid, 4-amino-4-oxo-2-sulfo-, N-C10-16-alkyl derivs., disodium salts

CAS 97553-61-2RS-B149295

COA per lot
Butanoic acid, 4-amino-4-oxo-2-sulfo-, N-C8-18-alkyl derivs., monosodium salts, compds. with triethanolamine

CAS 85585-83-7RS-B149294

COA per lot
Butanoic acid, 4-amino-4-oxo-2-sulfo-, N-coco alkyl derivs., diammonium salts

CAS 98106-77-5RS-B149285

COA per lot
Butanoic acid, 4-amino-4-oxo-2-sulfo-, N-coco alkyl derivs., monosodium salts, compds. with triethanolamine

CAS 90268-47-6RS-B149286

COA per lot
Butanoic acid, 4-amino-4-oxo-3-[[(phenylmethoxy)carbonyl]amino]-, (3S)-

CAS 23632-73-7RS-B149243

Formula C12H14N2O5
COA per lot
Butanoic acid, 4-amino-4-oxo-3-sulfo-, N-(C14-18 and C18-unsatd. branched and linear alkyl) derivs., disodium salts

CAS 85711-74-6RS-B149288

COA per lot
Butanoic acid, 4-amino-4-oxo-3-sulfo-, N-[3-(C10-18-alkyloxy)propyl] derivs., disodium salts

CAS 90268-49-8RS-B149277

COA per lot
Butanoic acid, 4-amino-4-oxo-3-sulfo-, N-C10-16-alkyl derivs., disodium salts

CAS 97553-63-4RS-B149287

COA per lot
Butanoic acid, 4-amino-4-oxo-3-sulfo-, N-coco alkyl derivs., diammonium salts

CAS 98106-79-7RS-B149289

COA per lot
Butanoic acid, 4-amino-4-oxo-3-sulfo-, N-coco alkyl derivs., disodium salts

CAS 97553-62-3RS-B149290

COA per lot
Butanoic acid, 4-amino-4-oxosulfo-, N-coco alkyl derivs., monosodium salts, compds. with ethanolamine

CAS 91672-49-0RS-B149297

COA per lot
Butanoic acid, 4-amino-4-oxosulfo-, N-tallow alkyl derivs., monosodium salts, compds. with ethanolamine

CAS 91672-50-3RS-B149291

COA per lot
Butanoic acid, 4-amino-4-thioxo-, methyl ester

CAS 80592-96-7RS-B149244

Formula C5H9NO2S
COA per lot
Butanoic acid, 4-bromo-, 2,5-dioxo-1-pyrrolidinyl ester

CAS 42014-52-8RS-B149245

Formula C8H10BrNO4
COA per lot
Butanoic acid, 4-bromo-, 3-bromopropyl ester

CAS 64229-39-6RS-B149246

Formula C7H12Br2O2
COA per lot
Butanoic acid, 4-bromo-2-[[(1,1-dimethylethoxy)carbonyl]amino]-, 1,1-dimethylethyl ester

CAS 118444-07-8RS-B149247

Formula C10H17NO2
COA per lot
Butanoic acid, 4-bromo-2-[[(1,1-dimethylethoxy)carbonyl]amino]-, phenylmethyl ester

CAS 1822481-01-5RS-B149037

Formula C16H22BrNO4 MW 372.25
COA per lot
Butanoic acid, 4-bromo-2-methyl-2-(methylsulfonyl)-, methyl ester

CAS 2215065-09-9RS-B149248

Formula C7H13BrO4S
COA per lot
Butanoic acid, 4-bromo-3,3,4,4-tetrafluoro-

CAS 131118-43-9RS-B149038

Formula C4H3BrF4O2 MW 238.96
COA per lot
Butanoic acid, 4-chloro-, hexyl ester

CAS 3153-31-9RS-B149249

Formula C10H19ClO2
COA per lot
Butanoic acid, 4-chloro-, phenylmethyl ester

CAS 2327-84-6RS-B149250

Formula C11H13ClO2
COA per lot
Butanoic acid, 4-chloro-3-methyl-4-oxo-, methyl ester

CAS 82923-97-5RS-B149251

Formula C6H9ClO3
COA per lot
Butanoic acid, 4-chloro-3-oxo-, ethenyl ester

CAS 128218-60-0RS-B149314

COA per lot
Butanoic acid, 4-chloro-4-ethoxy-2-oxo-, ethyl ester

CAS 172314-57-7RS-B149252

Formula C8H13ClO4
COA per lot
BUTANOIC ACID, 4-CYANO-3-HYDROXY-, METHYL ESTER, (3R)-

CAS 141942-84-9RS-B149046

Formula C6H9NO3
COA per lot
Butanoic acid, 4-hydroxy-3-[[(phenylMethoxy)carbonyl]aMino]-,1,1-diMethylethyl ester, (3S)-

CAS 146398-02-9RS-B149253

Formula C16H23NO5
COA per lot
Butanoic acid, 4-iodo-2-[[(phenylmethoxy)carbonyl]amino]-, methyl ester, (2S)-

CAS 82179-04-2RS-B149254

Formula C13H16INO4
COA per lot
Butanoic acid, 4-methoxy-3-oxo-, hexyl ester

CAS 2010177-90-7RS-B149255

Formula C11H20O4
COA per lot
Butanoic acid, 4-oxo-4-(propyl(2,4,6-triiodo-3-methoxyphenyl)amino)-(9CI)

CAS 37938-78-6RS-B149334

Formula C14H16I3NO4 MW 643
COA per lot
Butanoic acid, 4-oxo-4-[(2-phenylethyl)amino]-

CAS 1083-55-2RS-B149256

Formula C12H15NO3
COA per lot
Butanoic acid, [(4S)-2,2,4-trimethyl-1,3-dioxolan-4-yl]methyl ester

CAS 149563-84-8RS-B149039

Formula C11H20O4 MW 216.27
COA per lot
Butanoic acid, glycylglycyl-2-amino-(9CI)

CAS 114148-83-3RS-B149257

Formula C8H15N3O4
COA per lot
Butanoic acid,2,3-dihydroxy-4-[(2-nitrophenyl)amino]-4-oxo-,[R-(R*,R*)]-(9CI)

CAS 19523-81-0RS-B149258

Formula C10H10N2O7
COA per lot
Butanoic acid,2-aMino-4-oxo-

CAS 15106-57-7RS-B149259

Formula C4H7NO3
COA per lot
Butanoic acid,2-ethyl-, hexyl ester

CAS 79868-50-1RS-B149040

Formula C12H24O2 MW 200.32
COA per lot
Butanoic acid,3-(((9H-fluoren-9-ylmethoxy)carbonyl)amino)-4-

CAS 2350701-37-8RS-B149260

Formula C19H18FNO4
COA per lot
Butanoic Acid-d7

CAS not assignedRS-B149364

COA per lot
JWH073-butanoic acid Metabolite

CAS 1307803-52-6RS-B149003

Formula C23H19NO3 MW 357.4
COA per lot
Butanoic Acid Impurity 1

CAS not assignedRS-B149367

COA per lot
Butanoic Acid Related Compound 1

CAS not assignedRS-B149363

COA per lot
Butanoic Acid Impurity 2

CAS not assignedRS-B149368

COA per lot
Butanoic Acid Related Compound 2 HCl

CAS not assignedRS-B149366

COA per lot

368 reference standards

Frequently asked

How many Butanoic acid-related reference standards do you hold?

368 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 368 of them and 286 entries carry a structure drawing. The catalogue is extended as new lots are released.

Can you supply a Butanoic acid impurity that is not listed here?

Yes. Non-compendial impurities can be quoted from a structure — a CAS number is not required. Send the structure, a SMILES string or the parent drug substance with your enquiry and we will come back with availability.

What documentation is supplied with Butanoic acid impurities?

Every lot ships with its own certificate of analysis. The certificate records the catalogue number, the batch number, the tests performed, the specification applied and the result obtained for that lot. A safety data sheet is supplied with the shipment.

Do you publish prices or a lead time for Butanoic acid impurities?

No price list is published: quotations are prepared per enquiry, because availability and packing depend on the lot and the quantity you need. Send the catalogue number and the quantity and a technical contact will answer with availability and a quotation.

Cannot find the impurity you need? Non-compendial impurities can be quoted from a structure — a CAS number is not required. Write to sales@rssechem.com.