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Impurities & Reference Standards

API Impurities

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

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Reference Standard

(R,S)-Nornicotine chemical structure

(R,S)-Nornicotine

CAS: 5746-86-1
Formula: C₉H₁₂N₂
MW: 148.2 g/mol

VQ-032139

Reference Standard

(R,Z)-1-(4-(3-Methylthiophen-2-yl)-4-(thiophen-2-yl)but-3-en-1-yl)piperidine-3-carboxylic Acid chemical structure

(R,Z)-1-(4-(3-Methylthiophen-2-yl)-4-(thiophen-2-yl)but-3-en-1-yl)piperidine-3-carboxylic Acid

CAS: 745762-44-1
Formula: C₁₉H₂₃NO₂S₂
MW: 361.5 g/mol

VQ-028851

Reference Standard

(R)- 3-[(1-Methyl-2-pyrrolidinyl)methyl]-1H-Indole chemical structure

(R)- 3-[(1-Methyl-2-pyrrolidinyl)methyl]-1H-Indole

CAS: 143322-55-8
Formula: C₁₄H₁₈N₂
MW: 214.31 g/mol

VQ-030422

Reference Standard

(R)-(-)-2-Chloromandelic Acid chemical structure

(R)-(-)-2-Chloromandelic Acid

CAS: 52950-18-2
Formula: C₈H₇ClO₃
MW: 186.59 g/mol

VQ-036415

Reference Standard

(R)-(-)-2-Phenylglycine methyl ester hydrochloride chemical structure

(R)-(-)-2-Phenylglycine methyl ester hydrochloride

CAS: 19883-41-1
Formula: C₉H₁₂ClNO₂
MW: 201.65 g/mol

VQ-029706

Reference Standard

(R)-(-)-2,2-Dimethyl-1,3-Dioxolane-4-Methanol chemical structure

(R)-(-)-2,2-Dimethyl-1,3-Dioxolane-4-Methanol

CAS: 14347-78-5
Formula: C₆H₁₂O₃
MW: 132.16 g/mol

VQ-037541

Reference Standard

(R)-(-)-3-Quinuclidinol Hydrochloride chemical structure

(R)-(-)-3-Quinuclidinol Hydrochloride

CAS: 42437-96-7
Formula: C₇H₁₄ClNO
MW: 163.64 g/mol

VQ-033918

Reference Standard

(R)-(-)-4-Benzyl-3-propionyl-2-oxazolidinone chemical structure

(R)-(-)-4-Benzyl-3-propionyl-2-oxazolidinone

CAS: 131685-53-5
Formula: C₁₃H₁₅NO₃
MW: 233.26 g/mol

VQ-033725

Reference Standard

(R)-(-)-Binaphthyl-2,2'-diyl hydrogen Phosphate chemical structure

(R)-(-)-Binaphthyl-2,2'-diyl hydrogen Phosphate

CAS: 39648-67-4
Formula: C₂₀H₁₂O₄P-
MW: 347.3 g/mol

VQ-044673

Reference Standard

(R)-(-)-Littorine chemical structure

(R)-(-)-Littorine

CAS: 21956-47-8
Formula: C₁₇H₂₃NO₃
MW: 289.4 g/mol

VQ-024428

Reference Standard

(R)-(((1-(6-(Ethylamino)-9H-purin-9-yl)propan-2-yl)oxy)methyl)phosphonic acid chemical structure

(R)-(((1-(6-(Ethylamino)-9H-purin-9-yl)propan-2-yl)oxy)methyl)phosphonic acid

CAS: 1878175-74-6
Formula: C₁₁H₁₈N₅O₄P
MW: 315.27 g/mol

VQ-042417

Reference Standard

(R)-((2R,5R)-5-(4-Aminobenzyl)pyrrolidin-2-yl)(phenyl)methanol chemical structure

(R)-((2R,5R)-5-(4-Aminobenzyl)pyrrolidin-2-yl)(phenyl)methanol

CAS: 1426235-11-1
Formula: C₁₈H₂₂N₂O
MW: 282.4 g/mol

VQ-023999

Reference Standard

(R)-((2R,5S)-5-(4-Aminobenzyl)pyrrolidin-2-yl)(phenyl)methanol chemical structure

(R)-((2R,5S)-5-(4-Aminobenzyl)pyrrolidin-2-yl)(phenyl)methanol

CAS: 1295539-30-8
Formula: C₁₈H₂₂N₂O
MW: 282.4 g/mol

VQ-021358

Reference Standard

(R)-(+)-1-(4-Methoxybenzyl)-1,2,3,4,5,6,7,8-octahydroisoquinoline chemical structure

(R)-(+)-1-(4-Methoxybenzyl)-1,2,3,4,5,6,7,8-octahydroisoquinoline

CAS: 30356-08-2
Formula: C₁₇H₂₃NO
MW: 257.37 g/mol

VQ-030161

Reference Standard

(R)-(+)-2,2-Dimethyl-1,3-dioxolane-4-carboxaldehyde chemical structure

(R)-(+)-2,2-Dimethyl-1,3-dioxolane-4-carboxaldehyde

CAS: 15186-48-8
Formula: C₆H₁₀O₃
MW: 130.14 g/mol

VQ-030964

Reference Standard

(R)-(+)-5-Methoxylaudanosine chemical structure

(R)-(+)-5-Methoxylaudanosine

CAS: 104758-49-8
Formula: C₂₂H₂₉NO₅
MW: 387.5 g/mol

VQ-038312

Reference Standard

(R)-(+)-Menthofuran chemical structure

(R)-(+)-Menthofuran

CAS: 17957-94-7
Formula: C₁₀H₁₄O
MW: 150.22 g/mol

VQ-032405

Reference Standard

(R)-(+)-Nor Verapamil Hydrochloride chemical structure

(R)-(+)-Nor Verapamil Hydrochloride

CAS: 147158-71-2
Formula: C₂₆H₃₇ClN₂O₄
MW: 477 g/mol

VQ-034585

Reference Standard

(R)-(1-(2,5-Dichlorobenzamido)-3-methylbutyl)boronic Acid chemical structure

(R)-(1-(2,5-Dichlorobenzamido)-3-methylbutyl)boronic Acid

CAS: 2806031-79-6
Formula: C₁₂H₁₆BCl₂NO₃
MW: 304 g/mol

VQ-044702

Reference Standard

(R)-(2-Methyloxiran-2-yl)methyl 4-nitrobenzenesulfonate chemical structure

(R)-(2-Methyloxiran-2-yl)methyl 4-nitrobenzenesulfonate

CAS: 683276-64-4
Formula: C₁₀H₁₁NO₆S
MW: 273.26 g/mol

VQ-044876

Reference Standard

(R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methyl 4-methylbenzenesulfonate chemical structure

(R)-(2,2-Dimethyl-1,3-dioxolan-4-yl)methyl 4-methylbenzenesulfonate

CAS: 23788-74-1
Formula: C₁₃H₁₈O₅S
MW: 286.35 g/mol

VQ-040308

Reference Standard

(R)-(3-(4-(6-(2H-Tetrazol-5-yl)pyridin-3-yl)-3-fluorophenyl)-2-oxooxazolidin-5-yl)methyl dihydrogen phosphate chemical structure

(R)-(3-(4-(6-(2H-Tetrazol-5-yl)pyridin-3-yl)-3-fluorophenyl)-2-oxooxazolidin-5-yl)methyl dihydrogen phosphate

CAS: 1239662-47-5
Formula: C₁₆H₁₄FN₆O₆P
MW: 436.29 g/mol

VQ-023849

Reference Standard

(R)-(3-(4-Morpholinophenyl)-2-oxooxazolidin-5-yl)methyl methanesulfonate chemical structure

(R)-(3-(4-Morpholinophenyl)-2-oxooxazolidin-5-yl)methyl methanesulfonate

CAS: 556801-09-3
Formula: C₁₅H₂₀N₂O₆S
MW: 356.4 g/mol

VQ-048900

Reference Standard

(R)-(4-(1-(2-Cyano-1-cyclopentylethyl)-1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)methyl Pivalate chemical structure

(R)-(4-(1-(2-Cyano-1-cyclopentylethyl)-1H-pyrazol-4-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)methyl Pivalate

CAS: 1146629-80-2
Formula: C₂₃H₂₈N₆O₂
MW: 420.5 g/mol

VQ-033713

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