Product division
Impurities & Reference Standards
Pharmacopoeial and non-pharmacopoeial impurities, metabolites, nitrosamines and working standards with characterisation data for QC and regulatory work.
27,990products
6sub-categories
2,746in stock
COA + SDSwith every lot
API Impurities 14,098Pharmacopeial Impurities (EP / USP / BP) 4,399Nitrosamine Impurities 631Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504Metabolites & Degradation Products 3,922API Reference Standards 3,436
(2S,3S)-3-((S)-1-((tert-Butyldimethylsilyl)oxy)ethyl)-4-oxoazetidin-2-yl acetate
- CAS
- 81275-02-7
- Formula
- C13H25NO4Si
- MW
- 287.43 g/mol
VQ-031176
(2S,3S)-3-(2,5-Difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanenitrile
- CAS
- 2001051-99-4
- Formula
- C13H12F2N4O
- MW
- 278.26 g/mol
VQ-026229
(2S,3S)-4-((5-Cyano-2-((S)-4-(dimethylamino)-1-(4-fluorophenyl)-1-hydroxybutyl)benzyl)oxy)-2,3-bis((4-methylbenzoyl)oxy)-4-oxobutanoic Acid
- CAS
- 2173043-05-3
- Formula
- C40H39FN2O9
- MW
- 710.75 g/mol
VQ-030554
(2S,3S)-5-(2-Aminoethyl)-2,3-dihydro-3-hydroxy-2-(4-hydroxyphenyl)-1,5-benzothiazepin-4(5H)-one
- CAS
- 115992-91-1
- Formula
- C17H18N2O3S
- MW
- 330.4 g/mol
VQ-025323
(2S,4R)-1-((2S)-5-Guanidino-2-(3-methyl-1,2,3,4-tetrahydroquinoline-8-sulfonamido)pentanoyl)-4-methylpiperidine-2-carboxylic Acid
- CAS
- 189264-02-6
- Formula
- C23H36N6O5S
- MW
- 508.6 g/mol
VQ-043046
(2S,4R)-1-(Diisopropoxyphosphoryl)-4-hydroxypyrrolidine-2-carboxylic acid
- CAS
- 117286-92-7
- Formula
- C11H22NO6P
- MW
- 295.27 g/mol
VQ-044803
![(2S,4R)-5-([1,1'-Biphenyl]-4-yl)-4-((tert-butoxycarbonyl)amino)-2-methylpentanoic Acid chemical structure](/media/structures/YNELJETWNMPEEH-OXJNMPFZSA-N.svg)
(2S,4R)-5-([1,1'-Biphenyl]-4-yl)-4-((tert-butoxycarbonyl)amino)-2-methylpentanoic Acid
- CAS
- 1012341-54-6
- Formula
- C23H29NO4
- MW
- 383.5 g/mol
VQ-027956
(2S,4S,5S,6S)-4-Amino-6-methyltetrahydro-2H-pyran-2,5-diol
- CAS
- 746564-84-1
- Formula
- C6H13NO3
- MW
- 147.17 g/mol
VQ-047973
(2S,4S,5S)-3-(Tert-Butoxycarbonyl)-2-(4-methoxyphenyl)-4-phenyloxazolidine-5-carboxylic acid
- CAS
- 153652-67-6
- Formula
- C22H25NO6
- MW
- 399.4 g/mol
VQ-035125
(2S,4S)-1-(tert-Butoxycarbonyl)-4-(4-(3-methyl-1-phenyl-1H-pyrazol-5-yl)piperazin-1-yl)pyrrolidine-2-carboxylic acid
- CAS
- 1821705-03-6
- Formula
- C24H33N5O4
- MW
- 455.5 g/mol
VQ-034098
(2S,4S)-2-((R)-1-((R)-2-Amino-2-(4-hydroxyphenyl)acetamido)-2-methoxy-2-oxoethyl)-5,5-dimethylthiazolidine-4-carboxylic acid
- CAS
- 185802-22-6
- Formula
- C17H23N3O6S
- MW
- 397.4 g/mol
VQ-024270
(2S,4S)-4-Cyclohexyl-1-(3-oxopentanoyl)pyrrolidine-2-carboxylic acid
- CAS
- 149760-14-5
- Formula
- C16H25NO4
- MW
- 295.37 g/mol
VQ-030880
![(2S,4S)-5-(Biphenyl-4-yl)-4-[(tert-butoxycarbonyl)amino]-2-methylpentanoic Acid chemical structure](/media/structures/YNELJETWNMPEEH-JXFKEZNVSA-N.svg)
(2S,4S)-5-(Biphenyl-4-yl)-4-[(tert-butoxycarbonyl)amino]-2-methylpentanoic Acid
- CAS
- 1012341-52-4
- Formula
- C23H29NO4
- MW
- 383.5 g/mol
VQ-033717
(2S,4S)-tert-Butyl 4-hydroxy-2-(thiazolidine-3-carbonyl)pyrrolidine-1-carboxylate
- CAS
- 401564-34-9
- Formula
- C13H22N2O4S
- MW
- 302.39 g/mol
VQ-028244
(2S,5R)-(1R,2S,5R)-2-Isopropyl-5-methylcyclohexyl 5-(4-amino-5-fluoro-2-oxopyrimidin-1(2H)-yl)-1,3-oxathiolane-2-carboxylate
- CAS
- 147126-75-8
- Formula
- C18H26FN3O4S
- MW
- 399.5 g/mol
VQ-025531
![(2S,5R)-5-[(Phenylmethoxy)amino]-2-piperidinecarboxamide chemical structure](/media/structures/OWIVQKMLPQEEGV-NEPJUHHUSA-N.svg)
(2S,5R)-5-[(Phenylmethoxy)amino]-2-piperidinecarboxamide
- CAS
- 1416134-49-0
- Formula
- C13H19N3O2
- MW
- 249.31 g/mol
VQ-024451
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