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Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

14,098products

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Reference Standard

(1R,2S)-2-(3-Fluorophenyl)cyclopropan-1-amine hydrochloride chemical structure

(1R,2S)-2-(3-Fluorophenyl)cyclopropan-1-amine hydrochloride

CAS: 1643378-58-8
Formula: C₉H₁₁ClFN
MW: 187.64 g/mol

VQ-042540

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-Phenylcyclopropanecarbohydrazide chemical structure

(1R,2S)-2-Phenylcyclopropanecarbohydrazide

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

VQ-042650

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,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)-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

Reference Standard

(1R,4R)-2-Methyl-1-phenyl-1,2,3,4-tetrahydroisoquinoline-4,6-diol

(1R,4R)-2-Methyl-1-phenyl-1,2,3,4-tetrahydroisoquinoline-4,6-diol

CAS: 2095343-25-0
Formula: C₁₆H₁₇NO₂
MW: 255.31 g/mol

VQ-042035

Reference Standard

(1R,4R)-Isomenthone chemical structure

(1R,4R)-Isomenthone

CAS: 1196-31-2
Formula: C₁₀H₁₈O
MW: 154.25 g/mol

VQ-032861

Reference Standard

(1R,4R)-Rel-4-[2-Amino-6-(cyclopropylamino)-9H-purin-9-yl]-2-cyclopentene-1-methanol Hydrochloride chemical structure

(1R,4R)-Rel-4-[2-Amino-6-(cyclopropylamino)-9H-purin-9-yl]-2-cyclopentene-1-methanol Hydrochloride

CAS: 267668-71-3
Formula: C₁₄H₁₉ClN₆O
MW: 322.79 g/mol

VQ-028974

Reference Standard

(1R,4S,4AR,9aS)-rel-1,4,4a,9a-Tetrahydro-4a-methyl-1,4-methanoanthracene-9,10-dione chemical structure

(1R,4S,4AR,9aS)-rel-1,4,4a,9a-Tetrahydro-4a-methyl-1,4-methanoanthracene-9,10-dione

CAS: 97804-50-7
Formula: C₁₆H₁₄O₂
MW: 238.28 g/mol

VQ-033172

Reference Standard

(1R,4S)-1-Methyl-4-(prop-1-en-2-yl)cyclohex-2-en-1-ol chemical structure

(1R,4S)-1-Methyl-4-(prop-1-en-2-yl)cyclohex-2-en-1-ol

CAS: 82769-01-5
Formula: C₁₀H₁₆O
MW: 152.23 g/mol

VQ-044666

Reference Standard

(1R,4S)-2-Oxa-3-azabicyclo[2.2.1]heptane Hydrochloride

(1R,4S)-2-Oxa-3-azabicyclo[2.2.1]heptane Hydrochloride

CAS: 2411506-37-9
Formula: C₅H₁₀ClNO
MW: 135.59 g/mol

VQ-021830

Reference Standard

(1R,4S)-Sertraline chemical structure

(1R,4S)-Sertraline

CAS: 79951-46-5
Formula: C₁₇H₁₈Cl₃N
MW: 342.7 g/mol

VQ-004262

Reference Standard

(1R,4S)-Sertraline Hydrochloride chemical structure

(1R,4S)-Sertraline Hydrochloride

CAS: 79896-32-5
Formula: C₁₇H₁₈Cl₃N
MW: 342.7 g/mol

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