Phenylalanine impurities and related standards

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

In this group: 58 fine chemicals · 15 general reference standards · 12 pharmaceutical intermediates · 6 impurity reference standards. CAS numbers are listed for 102 of 102; 102 entries carry a structure drawing.

On this page

102 reference standards

All entries — structure, identifiers and pack sizes

(2R)-2-(dimethylamino)-3-phenylpropanoic acid

CAS 301652-23-3C11H15NO2

MW 193.11

IN STOCKRS-Z401HIN
(R)-Methyl2-aminopentanoatehydrochloride

CAS 619330-91-5C6H13NO2.HCl

MW 167.63

IN STOCKRS-U093174
(S)-2-Amino-3-(2-chloro-4-methoxyphenyl)propanoic acid Hydrochloride

CAS 2703746-15-8C10H12ClNO3.HCl

MW 266.12

CUSTOM SYNTHESISRS-U079552
(S)-Methyl 2-Amino-3-(3-hydroxyphenyl)propanoate Hydrochloride

CAS 34260-72-5C10H13NO3

CUSTOM SYNTHESISRS-U070732
1-((9H-Fluoren-9-yl)methyl)piperidine

CAS 35661-58-6C19H21N

MW 263.38

IN STOCKRS-U015160
1-13C-D-Phenylalanine

CAS 1202063-94-2C813CH11NO2

MW 166.18

IN STOCKRS-P195002
2,4-Dinitro-L-Phenylalanine

CAS 49607-21-8C9H9N3O6

MW 255.19

IN STOCKRS-I010089
2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-bromophenyl)propanoic acid

CAS 276262-70-5C24H20BrNO4

MW 465.06

BACK ORDERRS-Z401GXH
2-Amino-3-(2-chloro-4-methylphenyl)propanoic acid

CAS 1270310-78-5C10H12ClNO2

MW 213.06

IN STOCKRS-Z002LA5
2-Amino-3-(3-ethoxyphenyl)propanoic acid

CAS 174732-61-7C11H15NO3

MW 209.11

IN STOCKRS-Z401D6H
2-Formylaminopropionic acid ethyl ester

CAS 4289-99-0C6H11NO3

BACK ORDERRS-U014907
3,4,5-Trihydroxyphenylalanine

CAS 16032-83-0C9H11NO5

MW 213.19

IN STOCKRS-P195006
3,4,5-Trihydroxyphenylalanine Hydrobromide

CAS not assignedC9H12BrNO5

MW 294.1

IN STOCKRS-P195031
3-(Tert-butyl)aniline hydrochloride

CAS 83672-23-5C10H16ClN

MW 185.1

IN STOCKRS-Z410MSG
3-Methylamino-1-propanol

CAS 42055-15-2C4H11NO

MW 89.14

CUSTOM SYNTHESISRS-I015437
3-tert-Butylaniline

CAS 5369-19-7C10H15N

MW 149.23

IN STOCKRS-U083288
4-Acetyl-L-phenylalanine-13C6

CAS 2705927-90-6C11H13NO3

MW 213.11

IN STOCKRS-Z401GQQ
4-Amino-N-(tert-butoxycarbonyl)-L-phenylalanine Methyl Ester

CAS 65615-90-9C15H22N2O4

MW 294.35

IN STOCKRS-P195018
4-Bromo-2-fluoro-D-phenylalanine

CAS 1213148-15-2C9H9BrFNO2

MW 260.98

IN STOCKRS-Z003S4Y
4-Iodo-D-phenylalanine

CAS 62561-75-5C9H10INO2

MW 291.09

IN STOCKRS-P195008
4-Nitro-L-phenylalanine monohydrate

CAS 207591-86-4C9H10N2O4·H2O

MW 228.2

IN STOCKRS-P195007
Benzyl L-phenylalaninate

CAS 962-39-0C16H17NO2

MW 255.32

IN STOCKRS-U043971
Boc-2-cyano-D-phenylalanine

CAS 261380-28-3C15H18N2O4

MW 290.31

IN STOCKRS-P195014
Boc-4-phenyl-Phe-OH

CAS 147923-08-8C20H23NO4

MW 341.4

IN STOCKRS-C004030
D-Homophenylalanine Ethyl Ester Hydrochloride

CAS 90940-54-8C12H17NO2.HCl

MW 243.73

IN STOCKRS-P195020
D-Phenylalanine tert-Butyl Ester Hydrochloride

CAS 3403-25-6C13H19NO2.HCl

MW 257.76

IN STOCKRS-P195016
Diphenylalanine

CAS 62653-26-3C15H15NO2

MW 241.29

IN STOCKRS-P195009
Ethyl 4-Aminobutyrate Hydrochloride

CAS 6937-16-2C6H13NO2

BACK ORDERRS-U095857
Fluorotoluene

CAS 352-70-5C7H7F

MW 110.13

IN STOCKRS-P1085055
Fmoc-4-chloro-L-phenylalanine

CAS 175453-08-4C24H20ClNO4

MW 421.9

BACK ORDERRS-P195011
Fmoc-d-3,3-diphenylalanine

CAS 189937-46-0C30H25NO4

MW 463.18

CUSTOM SYNTHESISRS-Z401E5L
Fmoc-D-3-Pal-OH

CAS 142994-45-4C23H20N2O4

MW 388.42

IN STOCKRS-I016088
Fmoc-D-4-Methoxyphe

CAS 201335-88-8C25H23NO5

MW 417.45

BACK ORDERRS-U211MB0
Fmoc-L-3,3-diphenylalanine

CAS 201484-50-6C30H25NO4

MW 463.5

BACK ORDERRS-P195013
Fmoc-l-4,4’-biphenylalanine

CAS 199110-64-0C30H25NO4

MW 463.5

BACK ORDERRS-P195012
Fmoc-ß-methyl-DL-phenylalanine

CAS 1214028-21-3C25H23NO4

MW 401.45

CUSTOM SYNTHESISRS-P195010
H-Trp-Phe-OH

CAS 6686-02-8C20H21N3O3

CUSTOM SYNTHESISRS-U050437
Isoamyl Benzoate

CAS 94-46-2C12H16O2

MW 192.26

IN STOCKRS-U061390
L-3-CHLOROPHENYLALANINE

CAS 80126-51-8C9H10ClNO2

MW 199.04

IN STOCKRS-Z401L15
L-Phenyl-2,3,4,5,6-D5-Alanine-β,β-D2

CAS 69113-60-6C9H4D7NO2

MW 172.2

IN STOCKRS-I003563
L-Phenylalanine ethyl ester hydrochloride

CAS 3182-93-2C11H15NO2.HCl

MW 229.71

IN STOCKRS-P195015
L-Phenylalanine hydrochloride

CAS 17585-69-2C9H11NO2

CUSTOM SYNTHESISRS-U072218
L-Phenylalanine tert-Butyl Ester Hydrochloride

CAS 15100-75-1C13H19NO2.HCl

MW 257.76

IN STOCKRS-P195005
L-Phenylalanine tert-Butyl Ester-d5

CAS 1177315-89-7C13H14D5NO2

MW 226.33

IN STOCKRS-P195001
L-Phenylalanine-d5 Methyl Ester Hydrochloride

CAS 1331897-23-4C10H8D5NO2.HCl

MW 220.71

IN STOCKRS-P195004
L-Tyrosine Diethylamide

CAS 695177-32-3C13H20N2O2

MW 236.3

IN STOCKRS-U072153
Methyl ((2R,3R)-3-methoxy-2-methyl-3-((S)-pyrrolidin-2-yl)propanoyl)-L-phenylalaninate Hydrochloride

CAS 864238-20-0C19H28N2O4.HCl

MW 384.9

IN STOCKRS-U082901
Methyl 2-amino-3-(2-hydroxyphenyl)propanoate hydrochloride

CAS 194795-20-5C10H14ClNO3

MW 231.07

IN STOCKRS-Z404GD7
N-(trans-4-Isopropylcyclohexylcarbonyl)-D-phenylalanine-D-phenylalanine

CAS not assignedC28H38N2O5

MW 482.61

BACK ORDERRS-P195032
N-Boc-4-[bis(2-hydroxyethyl)amino]-L-phenylalanine Methyl Ester

CAS 1217651-06-3C19H30N2O6

MW 382.21

IN STOCKRS-Z395OBV
N-Boc-4-nitro-L-phenylalanine Methyl Ester

CAS 65615-89-6C15H20N2O6

MW 324.33

IN STOCKRS-P195017
N-Formyl-Met-Leu-Phe

CAS 59880-97-6C21H31N3O5S

MW 437.56

BACK ORDERRS-U054840
N-Nitroso-N-methyl-L-phenylalanine

CAS 90988-28-6C10H12N2O3

MW 208.22

IN STOCKRS-N1500005
Na-(2-Naphthalenesulfonylglycyl)-4-amidino-D,L-phenylalaninepiperidide

CAS 86125-48-6C27H31N5O4S

MW 521.6

CUSTOM SYNTHESISRS-P195019
phenylalanine 4-hydroxybutyl ester

CAS 136680-70-1C13H19NO3

MW 237.14

IN STOCKRS-Z397Y8O
Phenylalanine, 2,3-difluoro-5-methyl-

CAS 1888561-98-5C10H11F2NO2

MW 215.2

IN STOCKRS-P195050
Phenylalanine, 2,4-difluoro-3-methyl-

CAS 1259956-59-6C10H11F2NO2

MW 215.2

IN STOCKRS-P195051
Phenylalanine, 2,4-difluoro-5-methyl-

CAS 1779434-66-0C10H11F2NO2

MW 215.2

IN STOCKRS-P195052
Phenylalanine, 2-chloro-3-fluoro-

CAS 1270323-08-4C9H9ClFNO2

MW 217.63

IN STOCKRS-P195053
Phenylalanine, 2-chloro-4-fluoro-, methyl ester

CAS 1343027-31-5C10H11ClFNO2

MW 231.65

IN STOCKRS-P195054
Phenylalanine, 2-chloro-N-[(1,1-dimethylethoxy)carbonyl]-3-fluoro-

CAS 1691986-54-5C14H17ClFNO4

MW 317.74

CUSTOM SYNTHESISRS-P195055
Phenylalanine, 2-chloro-N-[(9H-fluoren-9-ylmethoxy)carbonyl]-α-methyl-

CAS 2354579-29-4C25H22ClNO4

MW 435.91

BACK ORDERRS-P195037
Phenylalanine, 2-methoxy-4-methyl-

CAS 1391006-50-0C11H15NO3

MW 209.24

CUSTOM SYNTHESISRS-P195056
Phenylalanine, 2-methoxy-α-methyl-

CAS 1178375-60-4C11H15NO3

MW 209.24

IN STOCKRS-P195038
Phenylalanine, 3-amino-2-methyl-

CAS 1273596-35-2C10H14N2O2

MW 194.23

IN STOCKRS-P195057
Phenylalanine, 3-chloro-2,4-difluoro-, methyl ester

CAS 1259960-63-8C10H10ClF2NO2

MW 249.64

IN STOCKRS-P195058
Phenylalanine, 3-chloro-2-fluoro-, ethyl ester

CAS 1259992-38-5C11H13ClFNO2

MW 245.68

IN STOCKRS-P195059
Phenylalanine, 3-chloro-2-fluoro-, methyl ester

CAS 1603327-09-8C10H11ClFNO2

MW 231.65

IN STOCKRS-P195060
Phenylalanine, 3-chloro-2-methyl-

CAS 444727-04-2C10H12ClNO2

MW 213.66

CUSTOM SYNTHESISRS-P195061
Phenylalanine, 3-chloro-4-fluoro-, methyl ester

CAS 769914-95-6C10H11ClFNO2

MW 231.65

IN STOCKRS-P195062
Phenylalanine, 3-chloro-N-[(9H-fluoren-9-ylmethoxy)carbonyl]-α-methyl-

CAS 2353021-82-4C25H22ClNO4

MW 435.9

BACK ORDERRS-P195039
Phenylalanine, 3-hydroxy-N-[(phenylmethoxy)carbonyl]-, methyl ester

CAS 725725-43-9C18H19NO5

MW 329.35

IN STOCKRS-P195063
Phenylalanine, 3-iodo-α-methyl-

CAS 20846-40-6C10H12INO2

MW 305.11

IN STOCKRS-P195040
Phenylalanine, 4-aMino-N-[(1,1-diMethylethoxy)carbonyl]-

CAS 351208-73-6C14H20N2O4

MW 280.32

IN STOCKRS-P195027
Phenylalanine, 4-bromo-3-methyl-

CAS 1270324-85-0C10H12BrNO2

MW 258.11

IN STOCKRS-P195041
Phenylalanine, 4-chloro-2,5-difluoro-, methyl ester

CAS 1822494-60-9C10H10ClF2NO2

MW 249.64

IN STOCKRS-P195064
Phenylalanine, 4-chloro-2-(trifluoromethyl)-, methyl ester

CAS 2112251-22-4C11H11ClF3NO2

MW 281.66

IN STOCKRS-P195065
Phenylalanine, 4-chloro-N-[(1,1-dimethylethoxy)carbonyl]-α-methyl-

CAS 1694268-39-7C15H20ClNO4

MW 313.78

IN STOCKRS-P195042
Phenylalanine, 4-chloro-N-[(2-propen-1-yloxy)carbonyl]-

CAS 746672-89-9C13H14ClNO4

MW 283.71

IN STOCKRS-P195043
Phenylalanine, 4-fluoro-3-(trifluoromethyl)-, methyl ester

CAS 1543325-09-2C11H11F4NO2

MW 265.21

IN STOCKRS-P195067
Phenylalanine, 4-fluoro-3-hydroxy-

CAS 1069068-11-6C9H10FNO3

MW 199.18

IN STOCKRS-P195066
Phenylalanine, 4-methyl--bta--oxo-

CAS 121487-20-5C10H11NO3

MW 193.07

IN STOCKRS-Z395MP5
Phenylalanine, 4-nitro-, ethyl ester, monohydrochloride

CAS 55895-91-5C11H14N2O4

MW 238.1

IN STOCKRS-Z401JDZ
Phenylalanine, 5-fluoro-2-methyl-, methyl ester

CAS 1601887-62-0C11H14FNO2

MW 211.24

IN STOCKRS-P195068
Phenylalanine, 6-chloro-2-(trifluoromethyl)-

CAS 1259956-69-8C10H9ClF3NO2

MW 267.63

IN STOCKRS-P195069
Phenylalanine, N-[(1,1-dimethylethoxy)carbonyl]-2-fluoro-3-(trifluoromethyl)-

CAS 1260002-45-6C15H17F4NO4

MW 351.3

CUSTOM SYNTHESISRS-P195070
Phenylalanine, N-[(1,1-dimethylethoxy)carbonyl]-2-fluoro-4-(trifluoromethyl)-

CAS 1260002-76-3C15H17F4NO4

MW 351.3

IN STOCKRS-P195071
Phenylalanine, N-[(1,1-dimethylethoxy)carbonyl]-2-fluoro-α-methyl-

CAS 1696034-92-0C15H20FNO4

MW 297.32

IN STOCKRS-P195045
Phenylalanine, N-[(1,1-dimethylethoxy)carbonyl]-3-[[[(1,1-dimethylethoxy)carbonyl]amino]methyl]-

CAS 1822495-40-8C20H30N2O6

MW 394.47

IN STOCKRS-P195046
Phenylalanine, N-[(1,1-dimethylethoxy)carbonyl]-3-methoxy-4-methyl-

CAS 1259981-66-2C16H23NO5

MW 309.36

IN STOCKRS-P195072
Phenylalanine, N-[(1,1-diMethylethoxy)carbonyl]-4-(4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)-, Methyl ester

CAS 335030-22-3C21H32BNO6

MW 405.3

CUSTOM SYNTHESISRS-P195026
Phenylalanine, N-[(1,1-dimethylethoxy)carbonyl]-4-fluoro-2-methyl-

CAS 1259962-99-6C15H20FNO4

MW 297.33

CUSTOM SYNTHESISRS-P195073
Phenylalanine, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-2-fluoro-α-methyl-

CAS 1029147-39-4C25H22FNO4

MW 419.45

CUSTOM SYNTHESISRS-P195047
Phenylalanine, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-4-fluoro-α-methyl-

CAS 1693667-19-4C25H22FNO4

MW 419.45

CUSTOM SYNTHESISRS-P195048
Phenylalanine, N-[(9H-fluoren-9-ylmethoxy)carbonyl]-α-methyl-4-(trifluoromethyl)-

CAS 2353353-28-1C26H22F3NO4

MW 469.5

BACK ORDERRS-P195049
Phenylalanine, N-acetyl-2-(trifluoromethyl)-

CAS 120710-04-5C12H12F3NO3

MW 275.23

IN STOCKRS-P195074
Phenylalanine, N-acetyl-4-(methylsulfonyl)-β-oxo-, methyl ester

CAS 2293206-33-2C13H15NO6S

MW 313.06

CUSTOM SYNTHESISRS-Z401FP6
Phenylalanine, α-chloro-

CAS 1087745-86-5C58H66N6O22

MW 1198.42

CUSTOM SYNTHESISRS-Z393UQL
Phenylalanine, α-methyl-4-nitro-

CAS 35849-34-4C10H12N2O4

MW 224.22

IN STOCKRS-P195044
Phenylalanine,3-bromo-N-[(phenylmethoxy)carbonyl]-

CAS 331955-30-7C17H16BrNO4

MW 378.22

IN STOCKRS-P195025
Phenylalanine-4′-azobenzene HCl

CAS 2137036-84-9C15H16ClN3O2

MW 305.09

IN STOCKRS-Z401F44
Undecylenoyl phenylalanine

CAS 175357-18-3C20H29NO3

MW 331.45

IN STOCKRS-P195036

102 reference standards

Frequently asked

How many Phenylalanine-related reference standards do you hold?

102 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 102 of them and 102 entries carry a structure drawing. The catalogue is extended as new lots are released.

Can you supply a Phenylalanine 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 Phenylalanine 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 Phenylalanine 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.