Oxazole impurities and related standards

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

In this group: 90 fine chemicals · 14 impurity reference standards. CAS numbers are listed for 104 of 104; 86 entries carry a structure drawing.

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104 reference standards

All entries — structure, identifiers and pack sizes

Oxazole

CAS 2058690-28-9RS-O167097

Formula C18H22N2O3 MW 314.38
COA per lot
Oxazole

CAS 32432-14-7RS-O167098

Formula C18H18N2O MW 278.35
COA per lot
Oxazole

CAS 59716-75-5RS-O167099

Formula C20H20N2O2S MW 352.45
COA per lot
Oxazole

CAS 67322-93-4RS-O167100

Formula C18H16N2O3 MW 308.33
COA per lot
Oxazole

CAS 712307-95-4RS-O167101

Formula C22H22N2O2S MW 378.49
COA per lot
Oxazole

CAS 1390537-56-0RS-U211LTC

Formula C21H22N2O2S MW 366.48
COA per lot
Oxazole

CAS 392703-17-2RS-I516297

Formula C20H20N2O3S MW 368.45
COA per lot
Oxazole

CAS 1280298-31-8RS-U211LP5

Formula C22H24N2O2S MW 380.5
COA per lot
Oxazole, 2,2'-(1,3-phenylene)bis[4,5-dihydro-4-(1-methylethyl)-, (4S,4'S)-

CAS 131380-85-3RS-O167011

Formula C18H24N2O2
COA per lot
Oxazole, 2,2'-(1,3-phenylene)bis[4,5-dihydro-4-[(1S)-1-methylpropyl]-, (4S,4'S)-(9CI)

CAS 131380-86-4RS-O167012

Formula C20H28N2O2
COA per lot
Oxazole, 2,2'-(1-ethylpropylidene)bis[4,5-dihydro-4,5-diphenyl-, (4R,4'R,5S,5'S)-

CAS 1246401-51-3RS-O167014

Formula C35H34N2O2
COA per lot
Oxazole, 2,2'-(1-methyl-2-phenylethylidene)bis[4,5-dihydro-4-(phenylmethyl)-, (4R,4'R)-

CAS 2634687-70-8RS-O167015

Formula C29H30N2O2
COA per lot
Oxazole, 2,2'-(1-methyl-2-phenylethylidene)bis[4,5-dihydro-4-(phenylmethyl)-, (4S,4'S)-

CAS 1615699-79-0RS-O167016

Formula C29H30N2O2
COA per lot
Oxazole, 2,2'-(1-methylethylidene)bis[4,5-dihydro-4,4-dimethyl-

CAS 239103-32-3RS-O167001

Formula C13H22N2O2 MW 238.33
COA per lot
Oxazole, 2,2'-(1-methylethylidene)bis[4,5-dihydro-4-methyl-, (4R,4'R)-(9CI)

CAS 280755-86-4RS-O167017

Formula C11H18N2O2
COA per lot
Oxazole, 2,2'-(1-methylethylidene)bis[4,5-dihydro-4-methyl-, (4S,4'S)-

CAS 181708-51-0RS-O167018

Formula C11H18N2O2
COA per lot
Oxazole, 2,2'-(1-Methylethylidene)bis[4,5-dihydro-4-phenyl-

CAS 276254-59-2RS-O167013

Formula C21H22N2O2
COA per lot
Oxazole, 2,2'-(1-methylethylidene)bis[4,5-dihydro-4-tricyclo[3.3.1.13,7]dec-1-yl-, (4R,4'R)-(9CI)

CAS 497108-05-1RS-O167019

Formula C29H42N2O2
COA per lot
Oxazole, 2,2'-(1-methylethylidene)bis[4-cyclohexyl-4,5-dihydro-, (4S,4'S)-

CAS 1312953-67-5RS-O167002

Formula C21H34N2O2 MW 346.5
COA per lot
Oxazole, 2,2'-(1R,2S)-1,2-cyclohexanediylbis[4,5-dihydro-4-(1-methylethyl)-, (4R,4'R)-

CAS 2757083-85-3RS-O167003

Formula C18H30N2O2 MW 306.4
COA per lot
Oxazole, 2,2'-(1S)-[1,1'-binaphthalene]-2,2'-diylbis[4,5-dihydro-4-(1-methylethyl)-, (4R,4'R)-(9CI)

CAS 190672-50-5RS-O167004

Formula C32H32N2O2 MW 476.6
COA per lot
Oxazole, 2,2'-(4,6-dibenzofurandiyl)bis[4,5-dihydro-4-(1-methylethyl)-, (4R,4'R)-

CAS 2634687-86-6RS-O167020

Formula C24H26N2O3
COA per lot
Oxazole, 2,2'-[2-phenyl-1-(phenylmethyl)ethylidene]bis[4-(1,1-dimethylethyl)-4,5-dihydro-, (4R,4'S)-

CAS 2634687-78-6RS-O167021

Formula C29H38N2O2
COA per lot
Oxazole, 2,2'-methylenebis[4,5-dihydro-4,5-diphenyl-, (4R,4'R,5R,5'R)-(9CI)

CAS 852462-56-7RS-O167005

Formula C31H26N2O2 MW 458.5
COA per lot
Oxazole, 2,2'-methylenebis[4,5-dihydro-4-methyl-, (4S,4'S)-

CAS 1666116-57-9RS-O167022

Formula C9H14N2O2
COA per lot
Oxazole, 2,2′-(1,2-phenylene)bis[4-ethyl-4,5-dihydro-, (4S,4′S)-

CAS 352351-27-0RS-O167023

Formula C16H20N2O2
COA per lot
Oxazole, 2,2′-(2,3-naphthalenediyl)bis[4,5-dihydro-4-(1-methylethyl)-, (4S,4′S)-

CAS 591754-02-8RS-O167024

Formula C22H26N2O2
COA per lot
Oxazole, 2,2′-(2,3-naphthalenediyl)bis[4,5-dihydro-4-(2-methylpropyl)-, (4S,4′S)-

CAS 591754-03-9RS-O167025

Formula C24H30N2O2
COA per lot
Oxazole, 2,2′-(2,6-naphthalenediyl)bis[4,5-dihydro-4-(1-methylethyl)-, [S-(R*,R*)]-

CAS 152619-48-2RS-O167026

Formula C22H26N2O2
COA per lot
Oxazole, 2,2′-(2-methyl-1-propenylidene)bis[4,5-dihydro-4-phenyl-, (4S,4′S)-

CAS 876406-06-3RS-O167027

Formula C22H22N2O2
COA per lot
Oxazole, 2,2′-(diselenodi-2,1-phenylene)bis[4-ethyl-4,5-dihydro-

CAS 870639-90-0RS-O167028

Formula C22H24N2O2Se2
COA per lot
Oxazole, 2,2′-(ditellurodi-2,1-phenylene)bis[4-ethyl-4,5-dihydro-, (4R,4′R)-

CAS 406909-79-3RS-O167029

Formula C22H24N2O2Te2
COA per lot
Oxazole, 2,2′-(methylenedi-2,1-phenylene)bis[4,5-dihydro-4-(phenylmethyl)-, (4S,4′S)-

CAS 852043-76-6RS-O167030

Formula C33H30N2O2
COA per lot
Oxazole, 2,2′-[(1R)-6,6′-dimethyl[1,1′-biphenyl]-2,2′-diyl]bis[4,5-dihydro-4-(1-methylethyl)-, (4S,4′S)-

CAS 209072-61-7RS-O167031

Formula C26H32N2O2
COA per lot
Oxazole, 2,2′-[(4,6-dimethyl-1,3-phenylene)bis(methylene)]bis[4,5-dihydro-4-phenyl-, (4S,4′S)-

CAS 351526-26-6RS-O167032

Formula C28H28N2O2
COA per lot
Oxazole, 2,2′-[[5-[[(4S)-4,5-dihydro-4-phenyl-2-oxazolyl]methyl]-2,4,6-trimethyl-1,3-phenylene]bis(methylene)]bis[4,5-dihydro-4-methyl-, (4R,4′R)-

CAS 774577-28-5RS-O167033

Formula C29H35N3O3
COA per lot
Oxazole, 2,2′-[oxybis(methylene)]bis[4,5-dihydro-5-methyl-4-phenyl-, (4R,4′R,5R,5′R)-

CAS 474364-68-6RS-O167034

Formula C22H24N2O3
COA per lot
Oxazole, 2,3-dihydro-2,3-bis(1-methylethyl)-(9CI)

CAS 192214-45-2RS-O167035

Formula C9H17NO
COA per lot
Oxazole, 2-(1-methylethyl)-5-(1-methyl-2-propenyl)-(9CI)

CAS 136386-23-7RS-O167036

Formula C10H15NO
COA per lot
Oxazole, 2-(1-methylethyl)-5-(2-methyl-2-propenyl)-(9CI)

CAS 136386-25-9RS-O167037

Formula C10H15NO
COA per lot
Oxazole, 2-(1-methylethyl)-5-(2-propenyl)-(9CI)

CAS 136386-20-4RS-O167038

Formula C9H13NO
COA per lot
Oxazole, 2-(4-ethylphenyl)-5-methoxy-(9CI)

CAS 400727-90-4RS-O167083

Formula C12H13NO2 MW 203.24
COA per lot
Oxazole, 2-[2-(diphenylphosphino)phenyl]-4,5-dihydro-4-(1-methylethyl)-5,5-diphenyl-, (4R)-

CAS 1904575-43-4RS-O167039

Formula C36H32NOP
COA per lot
Oxazole, 2-[2-chloro-6-(diphenylphosphino)phenyl]-4,5-dihydro-4-(1-methylethyl)-, (4R)-

CAS 2757082-52-1RS-O167040

Formula C24H23ClNOP
COA per lot
Oxazole, 2-[2-chloro-6-(diphenylphosphino)phenyl]-4-(1,1-dimethylethyl)-4,5-dihydro-, (4R)-

CAS 2757082-51-0RS-O167041

Formula C25H25ClNOP
COA per lot
Oxazole, 2-benzo[b]thien-2-yl-4,5-dihydro-4-(1-methylethyl)-, (4R)-

CAS 2757084-00-5RS-O167042

Formula C14H15NOS
COA per lot
Oxazole, 2-bromo-4-(difluoromethyl)-

CAS 1781104-73-1RS-O167044

Formula C4H2BrF2NO
COA per lot
Oxazole, 2-broMo-4-(trifluoroMethyl)-

CAS 1060816-14-9RS-O167043

Formula C4HBrF3NO
COA per lot
Oxazole, 2-bromo-5-(3-fluorophenyl)-

CAS 1505270-20-1RS-O167045

Formula C9H5BrFNO
COA per lot
Oxazole, 2-bromo-5-cyclopropyl-

CAS 1894253-08-7RS-O167046

Formula C6H6BrNO
COA per lot
Oxazole, 2-bromo-5-iodo-

CAS 1597267-34-9RS-O167006

Formula C3HBrINO MW 273.85
COA per lot
Oxazole, 2-butyl-5-ethyl-4-methyl-

CAS 84028-02-4RS-O167047

Formula C10H17NO
COA per lot
Oxazole, 2-chloro-4-(3-chlorophenyl)-

CAS 1384067-20-2RS-O167048

Formula C9H5Cl2NO
COA per lot
Oxazole, 2-chloro-4-(3-methylphenyl)-

CAS 1384067-21-3RS-O167049

Formula C10H8ClNO
COA per lot
Oxazole, 2-chloro-4-(4-chlorophenyl)-

CAS 49656-13-5RS-O167050

Formula C9H5Cl2NO
COA per lot
Oxazole, 2-chloro-5-(4-methoxyphenyl)-

CAS 1060816-32-1RS-O167007

Formula C10H8ClNO2 MW 209.63
COA per lot
Oxazole, 2-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-

CAS 2710297-26-8RS-O167051

Formula C10H16BNO3
COA per lot
Oxazole, 4,5-dihydro-2,4-bis(1-methylethyl)-, (4R)-(9CI)

CAS 189040-53-7RS-O167075

COA per lot
Oxazole, 4,5-dihydro-2-(1-methylethenyl)-, polymer with ethenylbenzene

CAS 30174-74-4RS-O167077

COA per lot
Oxazole, 4,5-dihydro-2-[2-[(R)-(4-methylphenyl)sulfinyl]phenyl]-4-phenyl-, (4S)-

CAS 396094-85-2RS-O167082

Formula C22H19NO2S MW 361.47
COA per lot
Oxazole, 4,5-dihydro-4-(1-methylethyl)-2-(1-methyl-1-propenyl)-, (E)-(9CI)

CAS 134636-76-3RS-O167074

COA per lot
Oxazole, 4,5-dihydro-4-(1-methylethyl)-2-(1E)-1-propenyl-, (4S)-(9CI)

CAS 379690-18-3RS-O167081

Formula C9H15NO MW 153.22
COA per lot
Oxazole, 4,5-dihydro-4-(1-methylethyl)-2-(2-methylpropyl)-, (S)-(9CI)

CAS 175226-81-0RS-O167052

Formula C10H19NO
COA per lot
Oxazole, 4,5-dihydro-4-(1-methylethyl)-2-[(methylthio)methyl]-, (S)-(9CI)

CAS 154260-41-0RS-O167053

Formula C8H15NOS
COA per lot
Oxazole, 4,5-dihydro-4-(1-methylethyl)-2-propyl-, (4S)-(9CI)

CAS 253686-05-4RS-O167076

COA per lot
Oxazole, 4,5-diphenyl-2-((2-hydroxyethyl)amino)-

CAS 20503-75-7RS-O167054

Formula C17H16N2O2
COA per lot
Oxazole, 4-(1-methylethyl)-

CAS 947145-29-1RS-O167008

Formula C6H9NO MW 111.14
COA per lot
Oxazole, 4-(2-chloroethyl)-5-methyl-2-phenyl-

CAS 929094-26-8RS-O167055

Formula C12H12ClNO
COA per lot
Oxazole, 4-(chloromethyl)-2-[4-(difluoromethoxy)-3-(1-methylethoxy)phenyl]-

CAS 2103191-10-0RS-O167009

Formula C14H14ClF2NO3 MW 317.71
COA per lot
Oxazole, 4-butoxy-2-methyl-(9CI)

CAS 343270-55-3RS-O167079

Formula C8H13NO2 MW 155.2
COA per lot
Oxazole, 4-butyl-2-ethyl-4,5-dihydro-5-methyl-5-(2-propenyl)-(9CI)

CAS 205745-13-7RS-O167056

Formula C13H23NO
COA per lot
Oxazole, 4-cyclopentyl-4,5-dihydro-2-methyl-, (4R)-(9CI)

CAS 223473-38-9RS-O167057

Formula C9H15NO
COA per lot
Oxazole, 4-ethoxy-5-hexyl-4,5-dihydro-5-methyl-(9CI)

CAS 128101-14-4RS-O167058

Formula C12H23NO2
COA per lot
Oxazole, 4-ethyl-2,5-dihydro-2-methyl-2-(1-methylethyl)-(9CI)

CAS 325481-05-8RS-O167078

Formula C9H17NO MW 155.24
COA per lot
Oxazole, 4-ethyl-2-(3-methoxyphenyl)-(9CI)

CAS 365427-22-1RS-O167080

Formula C12H13NO2 MW 203.24
COA per lot
Oxazole, 4-ethyl-4,5-dihydro-2-(2-phenylethenyl)-(9CI)

CAS 246240-63-1RS-O167059

Formula C13H15NO
COA per lot
Oxazole, 5-[(4-bromophenoxy)methyl]-

CAS 501944-58-7RS-O167073

COA per lot
Oxazole, 5-[3-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]-

CAS 1403469-18-0RS-O167010

Formula C15H17BFNO3 MW 289.11
COA per lot
Oxazole, 5-bromo-2-(2-methylphenyl)-

CAS 1391739-99-3RS-O167060

Formula C10H8BrNO
COA per lot
Oxazole, 5-bromo-2-(trifluoromethyl)-

CAS 2167653-94-1RS-O167061

Formula C4HBrF3NO
COA per lot
Oxazole, 5-butyl-4-ethyl-2-methyl-

CAS 84027-98-5RS-O167062

Formula C10H17NO
COA per lot
Oxazole, 5-ethyl-4-methyl-2-(1-methylethyl)-(9CI)

CAS 102586-54-9RS-O167063

Formula C9H15NO
COA per lot
Oxazole, 5-iodo-

CAS 2174001-43-3RS-O167064

Formula C3H2INO
COA per lot
Oxazole,4-methyl-2,5-diphenyl-

CAS 2549-31-7RS-O167065

Formula C16H13NO
COA per lot
Oxazole-2,4-dicarboxylic acid 2-methyl ester

CAS 885704-73-4RS-O167066

Formula C6H5NO5
COA per lot
Oxazole-2-carboxylic acid hydrazide

CAS 90831-48-4RS-O167067

Formula C4H5N3O2
COA per lot
Oxazole-2-sulfonyl chloride

CAS 184170-50-1RS-O167068

Formula C3H2ClNO3S
COA per lot
Oxazole-4-carboxylic Acid

CAS 23012-13-7RS-O167069

Formula C4H3NO3
COA per lot
Oxazole-4-carboxylic acid methoxymethylamide

CAS 170486-48-3RS-O167070

Formula C6H8N2O3
COA per lot
Oxazole-5-carboxylic Acid

CAS 118994-90-4RS-O167071

Formula C4H3NO3
COA per lot
Oxazole-5-carboxylic Acid Hydrazide

CAS 885274-30-6RS-O167072

Formula C4H5N3O2
COA per lot
Oxazole Impurity 1

CAS not assignedRS-O167084

COA per lot
Oxazole Impurity 2

CAS not assignedRS-O167085

COA per lot
Oxazole Impurity 3

CAS not assignedRS-O167086

COA per lot
Oxazole Impurity 4

CAS not assignedRS-O167087

COA per lot
Oxazole Impurity 5

CAS not assignedRS-O167088

COA per lot
Oxazole Impurity 6

CAS not assignedRS-O167089

COA per lot
Oxazole Impurity 7

CAS not assignedRS-O167090

COA per lot
Oxazole Impurity 8

CAS not assignedRS-O167091

COA per lot
Oxazole Impurity 9

CAS not assignedRS-O167092

COA per lot
Oxazole Impurity 10

CAS not assignedRS-O167093

COA per lot
Oxazole Impurity 11

CAS not assignedRS-O167094

COA per lot
Oxazole Impurity 12

CAS not assignedRS-O167095

COA per lot
Oxazole Impurity 13

CAS not assignedRS-O167096

COA per lot

104 reference standards

Frequently asked

How many Oxazole-related reference standards do you hold?

104 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 104 of them and 86 entries carry a structure drawing. The catalogue is extended as new lots are released.

Can you supply an Oxazole 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 Oxazole 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 Oxazole 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.