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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 14,098 Pharmacopeial Impurities (EP / USP / BP) 4,399 Nitrosamine Impurities 631 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504 Metabolites & Degradation Products 3,922 API Reference Standards 3,436

Reference Standard

(R)-2-(2-((3,3-Dibutyl-7-(methylthio)-1,1-dioxido-5-phenyl-2,3,4,5-tetrahydrobenzo[b][1,4]thiazepin-8-yl)oxy)acetamido)-2-phenylacetic acid chemical structure

(R)-2-(2-((3,3-Dibutyl-7-(methylthio)-1,1-dioxido-5-phenyl-2,3,4,5-tetrahydrobenzo[b][1,4]thiazepin-8-yl)oxy)acetamido)-2-phenylacetic acid

CAS: 439086-76-7
Formula: C₃₄H₄₂N₂O₆S₂
MW: 638.8 g/mol

VQ-022500

Reference Standard

(R)-2-(2-((S)-1-(4-Chlorophenyl)-1-phenylethoxy)ethyl)-1-methylpyrrolidine Fumarate chemical structure

(R)-2-(2-((S)-1-(4-Chlorophenyl)-1-phenylethoxy)ethyl)-1-methylpyrrolidine Fumarate

CAS: 61826-30-0
Formula: C₂₅H₃₀ClNO₅
MW: 460 g/mol

VQ-044509

Reference Standard

(R)-2-(2-(Hydroxymethyl)pyrrolidin-1-yl)-4-((4-methoxybenzyl)amino)-N-(pyrimidin-2-ylmethyl)pyrimidine-5-carboxamide chemical structure

(R)-2-(2-(Hydroxymethyl)pyrrolidin-1-yl)-4-((4-methoxybenzyl)amino)-N-(pyrimidin-2-ylmethyl)pyrimidine-5-carboxamide

CAS: 2250242-21-6
Formula: C₂₃H₂₇N₇O₃
MW: 449.5 g/mol

VQ-043986

Reference Standard

(R)-2-(2-(tert-Butoxy)-2-oxoethyl)pentanoic Acid chemical structure

(R)-2-(2-(tert-Butoxy)-2-oxoethyl)pentanoic Acid

CAS: 112106-16-8
Formula: C₁₁H₂₀O₄
MW: 216.27 g/mol

VQ-029511

Reference Standard

(R)-2-(2-Aminothiazol-4-yl)-N-(4-(2-(hydroxy(2-hydroxy-2-phenylethyl)amino)ethyl)phenyl)acetamide chemical structure

(R)-2-(2-Aminothiazol-4-yl)-N-(4-(2-(hydroxy(2-hydroxy-2-phenylethyl)amino)ethyl)phenyl)acetamide

CAS: 2865161-71-1
Formula: C₂₁H₂₄N₄O₃S
MW: 412.5 g/mol

VQ-043728

Reference Standard

(R)-2-(2-Hydroxy-3-((2-hydroxyethyl)(phenyl)amino)propyl)isoindoline-1,3-dione

(R)-2-(2-Hydroxy-3-((2-hydroxyethyl)(phenyl)amino)propyl)isoindoline-1,3-dione

CAS: 1175817-46-5
Formula: C₁₉H₂₀N₂O₄
MW: 340.37 g/mol

VQ-041957

Reference Standard

(R)-2-(4-((4-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethanol chemical structure

(R)-2-(4-((4-Chlorophenyl)(phenyl)methyl)piperazin-1-yl)ethanol

CAS: 705289-61-8
Formula: C₁₉H₂₃ClN₂O
MW: 330.8 g/mol

VQ-044081

Reference Standard

(R)-2-(4-Hydroxybutan-2-yl)-9-methoxy-1,8-dioxo-1,8-dihydro-2H-pyrido[1,2-a]pyrazine-7-carboxylic Acid chemical structure

(R)-2-(4-Hydroxybutan-2-yl)-9-methoxy-1,8-dioxo-1,8-dihydro-2H-pyrido[1,2-a]pyrazine-7-carboxylic Acid

CAS: 2710626-41-6
Formula: C₁₄H₁₆N₂O₆
MW: 308.29 g/mol

VQ-030262

Reference Standard

(R)-2-(5-Iodo-6-methoxynaphthalen-2-yl)propanoic acid chemical structure

(R)-2-(5-Iodo-6-methoxynaphthalen-2-yl)propanoic acid

CAS: 116883-61-5
Formula: C₁₄H₁₃IO₃
MW: 356.15 g/mol

VQ-032070

Reference Standard

(R)-2-(Methylamino)-1-(3-nitrophenyl)ethan-1-ol

(R)-2-(Methylamino)-1-(3-nitrophenyl)ethan-1-ol

CAS: 50741-73-6
Formula: C₉H₁₂N₂O₃
MW: 196.2 g/mol

VQ-033692

Reference Standard

(R)-2-Amino-3-(7-methyl-1H-indazol-5-yl)-1-(4-(1-methylpiperidin-4-yl)piperazin-1-yl)propan-1-one

(R)-2-Amino-3-(7-methyl-1H-indazol-5-yl)-1-(4-(1-methylpiperidin-4-yl)piperazin-1-yl)propan-1-one

CAS: 2416093-70-2
Formula: C₂₁H₃₂N₆O
MW: 384.53 g/mol

VQ-045157

Reference Standard

(R)-2-Amino-3-(7-methyl-1H-indazol-5-yl)propanoic Acid chemical structure

(R)-2-Amino-3-(7-methyl-1H-indazol-5-yl)propanoic Acid

CAS: 1061710-38-0
Formula: C₁₁H₁₃N₃O₂
MW: 219.24 g/mol

VQ-035491

Reference Standard

(R)-2-Amino-4-methyl-1-((R)-2-methyloxiran-2-yl)pentan-1-one 2,2,2-trifluoroacetate chemical structure

(R)-2-Amino-4-methyl-1-((R)-2-methyloxiran-2-yl)pentan-1-one 2,2,2-trifluoroacetate

CAS: 2443766-79-6
Formula: C₁₁H₁₈F₃NO₄
MW: 285.26 g/mol

VQ-029648

Reference Standard

(R)-2-Amino-4-methyl-1-((S)-2-methyloxiran-2-yl)pentan-1-one 2,2,2-trifluoroacetate chemical structure

(R)-2-Amino-4-methyl-1-((S)-2-methyloxiran-2-yl)pentan-1-one 2,2,2-trifluoroacetate

CAS: 2436762-87-5
Formula: C₁₁H₁₈F₃NO₄
MW: 285.26 g/mol

VQ-024787

Reference Standard

(R)-2-Amino-N-((R)-1-amino-1-oxobutan-2-yl)butanamide chemical structure

(R)-2-Amino-N-((R)-1-amino-1-oxobutan-2-yl)butanamide

CAS: 1867585-44-1
Formula: C₈H₁₇N₃O₂
MW: 187.24 g/mol

VQ-044154

Reference Standard

(R)-2-Amino-N-(2-(6-oxo-5-phenyl-1,6-dihydropyrazin-2-yl)ethyl)-2-phenylacetamide chemical structure

(R)-2-Amino-N-(2-(6-oxo-5-phenyl-1,6-dihydropyrazin-2-yl)ethyl)-2-phenylacetamide

CAS: 78591-31-8
Formula: C₂₀H₂₀N₄O₂
MW: 348.4 g/mol

VQ-035317

Reference Standard

(R)-2-Benzyl-N,N-dimethylaziridine-1-sulfonamide chemical structure

(R)-2-Benzyl-N,N-dimethylaziridine-1-sulfonamide

CAS: 1370406-77-1
Formula: C₁₁H₁₆N₂O₂S
MW: 240.32 g/mol

VQ-042129

Reference Standard

(R)-2-Bromo-1-((2-methyloxiran-2-yl)methyl)-4-nitro-1H-imidazole chemical structure

(R)-2-Bromo-1-((2-methyloxiran-2-yl)methyl)-4-nitro-1H-imidazole

CAS: 681484-60-6
Formula: C₇H₈BrN₃O₃
MW: 262.06 g/mol

VQ-030116

Reference Standard

(R)-2-Chloro-1-(2,4-dichlorophenyl)ethyl methanesulfonate

(R)-2-Chloro-1-(2,4-dichlorophenyl)ethyl methanesulfonate

CAS: 2760787-92-4
Formula: C₉H₉Cl₃O₃S
MW: 303.59 g/mol

VQ-048978

Reference Standard

(R)-2-Chloro-4-((1-(hydroxymethyl)cyclobutyl)amino)-6,7-dihydrothieno[3,2-d]pyrimidine 5-oxide chemical structure

(R)-2-Chloro-4-((1-(hydroxymethyl)cyclobutyl)amino)-6,7-dihydrothieno[3,2-d]pyrimidine 5-oxide

CAS: 1423719-36-1
Formula: C₁₁H₁₄ClN₃O₂S
MW: 287.77 g/mol

VQ-041126

Reference Standard

(R)-2-Flurbiprofen chemical structure

(R)-2-Flurbiprofen

CAS: 51543-40-9
Formula: C₁₅H₁₃FO₂
MW: 244.26 g/mol

VQ-038977

Reference Standard

(R)-2-Hydroxy-4-methylpentanoic acid chemical structure

(R)-2-Hydroxy-4-methylpentanoic acid

CAS: 20312-37-2
Formula: C₆H₁₂O₃
MW: 132.16 g/mol

VQ-032925

Reference Standard

(R)-2-Hydroxy-N-(2-nitrophenethyl)-2-phenylacetamide chemical structure

(R)-2-Hydroxy-N-(2-nitrophenethyl)-2-phenylacetamide

CAS: 1684452-87-6
Formula: C₁₆H₁₆N₂O₄
MW: 300.31 g/mol

VQ-031942

Reference Standard

(R)-2-Methyl-3-(4-(4-(4-(trifluoromethoxy)phenoxy)piperidin-1-yl)phenoxy)propane-1,2-diol chemical structure

(R)-2-Methyl-3-(4-(4-(4-(trifluoromethoxy)phenoxy)piperidin-1-yl)phenoxy)propane-1,2-diol

CAS: 1318735-00-0
Formula: C₂₂H₂₆F₃NO₅
MW: 441.4 g/mol

VQ-025241

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