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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

(1R,2S)-2-(3-Hydroxypropyl)-6,7-dimethoxy-2-methyl-1-(3,4,5-trimethoxybenzyl)-1,2,3,4-tetrahydroisoquinolin-2-ium Chloride chemical structure

(1R,2S)-2-(3-Hydroxypropyl)-6,7-dimethoxy-2-methyl-1-(3,4,5-trimethoxybenzyl)-1,2,3,4-tetrahydroisoquinolin-2-ium Chloride

CAS: 107740-66-9
Formula: C₂₅H₃₆ClNO₆
MW: 482 g/mol

VQ-038459

Reference Standard

(1R,2S)-2-(3,4-Difluorophenyl)cyclopropanecarboxylic acid chemical structure

(1R,2S)-2-(3,4-Difluorophenyl)cyclopropanecarboxylic acid

CAS: 1414348-38-1
Formula: C₁₀H₈F₂O₂
MW: 198.17 g/mol

VQ-034250

Reference Standard

(1R,2S)-2-(3,5-Difluorophenyl)cyclopropanamine chemical structure

(1R,2S)-2-(3,5-Difluorophenyl)cyclopropanamine

CAS: 220352-50-1
Formula: C₉H₉F₂N
MW: 169.17 g/mol

VQ-034238

Reference Standard

(1R,2S)-2-(4-Chloro-3-fluorophenyl)cyclopropan-1-amine chemical structure

(1R,2S)-2-(4-Chloro-3-fluorophenyl)cyclopropan-1-amine

CAS: 2166301-04-6
Formula: C₉H₉ClFN
MW: 185.62 g/mol

VQ-042545

Reference Standard

(1R,2S)-2-(Hydroxymethyl)-1-phenylcyclopropanecarboxylic acid chemical structure

(1R,2S)-2-(Hydroxymethyl)-1-phenylcyclopropanecarboxylic acid

CAS: 66823-04-9
Formula: C₁₁H₁₂O₃
MW: 192.21 g/mol

VQ-031913

Reference Standard

(1R,2S)-2-Hydroxy-1-((R)-3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)propane-1-sulfonic acid chemical structure

(1R,2S)-2-Hydroxy-1-((R)-3-methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)propane-1-sulfonic acid

CAS: 2762440-12-8
Formula: C₁₃H₁₆N₂O₅S
MW: 312.34 g/mol

VQ-045006

Reference Standard

(1R,2S)-2-Phenylcyclopropanecarbohydrazide chemical structure

(1R,2S)-2-Phenylcyclopropanecarbohydrazide

CAS: 1932043-12-3
Formula: C₁₀H₁₂N₂O
MW: 176.21 g/mol

VQ-042650

Reference Standard

(1R,2S)-Bortezomib-d5 chemical structure

(1R,2S)-Bortezomib-d5

CAS: 1133706-15-6
Formula: C₁₉H₂₅BN₄O₄
MW: 389.3 g/mol

VQ-036003

Reference Standard

(1R,2S)-Darunavir chemical structure

(1R,2S)-Darunavir

CAS: 1402142-63-5
Formula: C₂₇H₃₇N₃O₇S
MW: 547.7 g/mol

VQ-022316

Reference Standard

(1R,2S)-N,N-Diethyl-2-(hydroxymethyl)-1-phenylcyclopropane-1-carboxamide chemical structure

(1R,2S)-N,N-Diethyl-2-(hydroxymethyl)-1-phenylcyclopropane-1-carboxamide

CAS: 172016-06-7
Formula: C₁₅H₂₁NO₂
MW: 247.33 g/mol

VQ-049115

Reference Standard

(1R,2S)-Rel-2-(3,4-Difluorophenyl) cyclopropanamine hydrochloride chemical structure

(1R,2S)-Rel-2-(3,4-Difluorophenyl) cyclopropanamine hydrochloride

CAS: 1156491-10-9
Formula: C₉H₁₀ClF₂N
MW: 205.63 g/mol

VQ-034229

Reference Standard

(1R,3AR,7aR)-1-((2R,5S,E)-5-Cyclopropyl-5-hydroxypent-3-en-2-yl)-7a-methyloctahydro-4H-inden-4-one chemical structure

(1R,3AR,7aR)-1-((2R,5S,E)-5-Cyclopropyl-5-hydroxypent-3-en-2-yl)-7a-methyloctahydro-4H-inden-4-one

CAS: 2106840-41-7
Formula: C₁₈H₂₈O₂
MW: 276.4 g/mol

VQ-021958

Reference Standard

(1R,3R)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-N-methyl-1H-pyrido[3,4-b]indole-3-carboxamide chemical structure

(1R,3R)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-N-methyl-1H-pyrido[3,4-b]indole-3-carboxamide

CAS: 951661-81-7
Formula: C₂₂H₂₀ClN₃O₄
MW: 425.9 g/mol

VQ-028189

Reference Standard

(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic acid chemical structure

(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic acid

CAS: 406938-39-4
Formula: C₁₉H₁₆N₂O₄
MW: 336.3 g/mol

VQ-034020

Reference Standard

(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-N-methyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxamide chemical structure

(1R,3R)-1-(Benzo[d][1,3]dioxol-5-yl)-N-methyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxamide

CAS: 951661-82-8
Formula: C₂₀H₁₉N₃O₃
MW: 349.4 g/mol

VQ-028187

Reference Standard

(1R,3R)-9H-Pyrido[3,4-B]indole-3-carboxylic acid, 1,2,3,4-tetrahydro-1-(3,4-methylenedioxyphenyl), methyl ester, hydrochloride chemical structure

(1R,3R)-9H-Pyrido[3,4-B]indole-3-carboxylic acid, 1,2,3,4-tetrahydro-1-(3,4-methylenedioxyphenyl), methyl ester, hydrochloride

CAS: 171752-68-4
Formula: C₂₀H₁₉ClN₂O₄
MW: 386.8 g/mol

VQ-028186

Reference Standard

(1R,3R)-Methyl-1,2,3,4-tetrahydro-1-(3,4-methylenedioxyphenyl)-9H-pyrido[3,4-b]indole-3-carboxylate chemical structure

(1R,3R)-Methyl-1,2,3,4-tetrahydro-1-(3,4-methylenedioxyphenyl)-9H-pyrido[3,4-b]indole-3-carboxylate

CAS: 171596-41-1
Formula: C₂₀H₁₈N₂O₄
MW: 350.4 g/mol

VQ-034016

Reference Standard

(1R,3S,4R)-ent-Entecavir chemical structure

(1R,3S,4R)-ent-Entecavir

CAS: 1367369-81-0
Formula: C₁₂H₁₅N₅O₃
MW: 277.28 g/mol

VQ-037007

Reference Standard

(1R,3S,4R)-N-(((R)-1,2,3,4-Tetrahydronaphthalen-1-yl)methyl)quinuclidin-3-amine

(1R,3S,4R)-N-(((R)-1,2,3,4-Tetrahydronaphthalen-1-yl)methyl)quinuclidin-3-amine

CAS: 2407763-15-7
Formula: C₁₈H₂₆N₂
MW: 270.42 g/mol

VQ-045020

Reference Standard

(1R,3S,5R)-2-Azabicyclo[3.1.0]hexane-3-carboxamide methanesulfonate chemical structure

(1R,3S,5R)-2-Azabicyclo[3.1.0]hexane-3-carboxamide methanesulfonate

CAS: 1564266-70-1
Formula: C₇H₁₄N₂O₄S
MW: 222.26 g/mol

VQ-027989

Reference Standard

(1R,3s,5S)-9-Methyl-9-azabicyclo[3.3.1]nonan-3-amine chemical structure

(1R,3s,5S)-9-Methyl-9-azabicyclo[3.3.1]nonan-3-amine

CAS: 76272-41-8
Formula: C₉H₁₈N₂
MW: 154.25 g/mol

VQ-048555

Reference Standard

(1R,3S)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid Methyl Ester chemical structure

(1R,3S)-1-(1,3-Benzodioxol-5-yl)-2-(2-chloroacetyl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylic Acid Methyl Ester

CAS: 629652-44-4
Formula: C₂₂H₁₉ClN₂O₅
MW: 426.8 g/mol

VQ-034900

Reference Standard

(1R,3S)-3-(tert-Butoxycarbonylamino) cyclopentyl acetate chemical structure

(1R,3S)-3-(tert-Butoxycarbonylamino) cyclopentyl acetate

CAS: 225641-82-7
Formula: C₁₂H₂₁NO₄
MW: 243.3 g/mol

VQ-035550

Reference Standard

(1R,3S)-Methyl1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate chemical structure

(1R,3S)-Methyl1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate

CAS: 171596-44-4
Formula: C₂₀H₁₈N₂O₄
MW: 350.4 g/mol

VQ-034015

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