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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

(αR,2R)-3,4-Dihydro-5-[(4-nitrophenyl)methyl]-α-phenyl-2H-pyrrole-2-methanol chemical structure

(αR,2R)-3,4-Dihydro-5-[(4-nitrophenyl)methyl]-α-phenyl-2H-pyrrole-2-methanol

CAS: 1628836-09-8
Formula: C₁₈H₁₈N₂O₃
MW: 310.3 g/mol

VQ-023998

Reference Standard

(αR,γR)-γ-[[(1,1-Dimethylethoxy)carbonyl]amino]-α-methyl-[1,1'-biphenyl]-4-pentanoic Acid chemical structure

(αR,γR)-γ-[[(1,1-Dimethylethoxy)carbonyl]amino]-α-methyl-[1,1'-biphenyl]-4-pentanoic Acid

CAS: 1012341-56-8
Formula: C₂₃H₂₉NO₄
MW: 383.5 g/mol

VQ-027957

Reference Standard

(αR)-N-[3-[3-(Difluoromethyl)phenyl]propyl]-α-methyl-1-naphthalenemethanamine chemical structure

(αR)-N-[3-[3-(Difluoromethyl)phenyl]propyl]-α-methyl-1-naphthalenemethanamine

CAS: 1025064-41-8
Formula: C₂₂H₂₃F₂N
MW: 339.4 g/mol

VQ-029808

Reference Standard

(αR)-α-Methyl-N-[[3-(trifluoromethyl)phenyl]methyl]-1-naphthalenemethanamine Hydrochloride chemical structure

(αR)-α-Methyl-N-[[3-(trifluoromethyl)phenyl]methyl]-1-naphthalenemethanamine Hydrochloride

CAS: 1229225-42-6
Formula: C₂₀H₁₉ClF₃N
MW: 365.8 g/mol

VQ-029796

Reference Standard

[(1R)-2-(Biphenyl-4-yl)-1-formylethyl]carbamic acid tert-butyl ester chemical structure

[(1R)-2-(Biphenyl-4-yl)-1-formylethyl]carbamic acid tert-butyl ester

CAS: 149709-58-0
Formula: C₂₀H₂₃NO₃
MW: 325.4 g/mol

VQ-027958

Reference Standard

[(1S)-3-Methyl-1-[[(2S)-2-methyloxiranyl]carbonyl]butyl]-carbamic Acid 1,1-Dimethylethyl Ester chemical structure

[(1S)-3-Methyl-1-[[(2S)-2-methyloxiranyl]carbonyl]butyl]-carbamic Acid 1,1-Dimethylethyl Ester

CAS: 247068-83-3
Formula: C₁₄H₂₅NO₄
MW: 271.35 g/mol

VQ-032398

Reference Standard

[(R)-3-(3-Fluoro-4-morpholinophenyl)-2-oxo-5-oxazolidinyl]methanol chemical structure

[(R)-3-(3-Fluoro-4-morpholinophenyl)-2-oxo-5-oxazolidinyl]methanol

CAS: 168828-82-8
Formula: C₁₄H₁₇FN₂O₄
MW: 296.29 g/mol

VQ-038062

Reference Standard

[[(1R)-2-(6-Amino-9H-purin-9-yl)-1-methylethoxy]methyl]monophenylester chemical structure

[[(1R)-2-(6-Amino-9H-purin-9-yl)-1-methylethoxy]methyl]monophenylester

CAS: 379270-35-6
Formula: C₁₅H₁₈N₅O₄P
MW: 363.31 g/mol

VQ-034111

Reference Standard

[1-11]-Bivalirudin chemical structure

[1-11]-Bivalirudin

CAS: 1224964-33-3
Formula: C₂₅H₃₃NaO₈
MW: 484.5 g/mol

VQ-044781

Reference Standard

[1,1′-Biphenyl]-4-ol, 2′,4′-difluoro chemical structure

[1,1′-Biphenyl]-4-ol, 2′,4′-difluoro

CAS: 59089-68-8
Formula: C₁₂H₈F₂O
MW: 206.19 g/mol

VQ-036702

Reference Standard

[1,2,4]Triazole-1-carboxamidine Hydrochloride chemical structure

[1,2,4]Triazole-1-carboxamidine Hydrochloride

CAS: 19503-26-5
Formula: C₃H₆ClN₅
MW: 147.57 g/mol

VQ-027436

Reference Standard

[12-20]-Bivalirudin chemical structure

[12-20]-Bivalirudin

CAS: 1224964-34-4
Formula: C₅₅H₇₄N₁₆O₁₄
MW: 1183.3 g/mol

VQ-044688

Reference Standard

[1S-(1α,2α,3β,5α)]-3-(Phenylmethoxy)-2-[(phenylmethoxy)methyl]-6-oxabicyclo[3.1.0]hexane chemical structure

[1S-(1α,2α,3β,5α)]-3-(Phenylmethoxy)-2-[(phenylmethoxy)methyl]-6-oxabicyclo[3.1.0]hexane

CAS: 110567-22-1
Formula: C₂₀H₂₂O₃
MW: 310.4 g/mol

VQ-025545

Reference Standard

[2-[(1R)-3-(Di(propan-2-yl)amino)-1-phenylpropyl]-4-formylphenyl] isobutyrate chemical structure

[2-[(1R)-3-(Di(propan-2-yl)amino)-1-phenylpropyl]-4-formylphenyl] isobutyrate

CAS: 1435768-96-9
Formula: C₂₆H₃₅NO₃
MW: 409.6 g/mol

VQ-025767

Reference Standard

[2-Cyclopropyl-4-(4-fluorophenyl)-quinolin-3-ylmethyl]-triphenyl-phosphonium bromido chemical structure

[2-Cyclopropyl-4-(4-fluorophenyl)-quinolin-3-ylmethyl]-triphenyl-phosphonium bromido

CAS: 154057-58-6
Formula: C₃₇H₃₀BrFNP
MW: 618.5 g/mol

VQ-027532

Reference Standard

[2,2'-Bipyridine]-5,5'-diamine chemical structure

[2,2'-Bipyridine]-5,5'-diamine

CAS: 52382-48-6
Formula: C₁₀H₁₀N₄
MW: 186.21 g/mol

VQ-030010

Reference Standard

[3-(2,6-Dichlorophenyl)-5-methyl-4-isoxazolyl]carbonyl N3-Acetylpenicilloic Acid chemical structure

[3-(2,6-Dichlorophenyl)-5-methyl-4-isoxazolyl]carbonyl N3-Acetylpenicilloic Acid

CAS: 934986-84-2
Formula: C₂₁H₂₁Cl₂N₃O₇S
MW: 530.4 g/mol

VQ-036682

Reference Standard

[4-(Trifluoromethyl)phenyl]carbamic acid chemical structure

[4-(Trifluoromethyl)phenyl]carbamic acid

CAS: 171171-44-1
Formula: C₈H₆F₃NO₂
MW: 205.13 g/mol

VQ-043914

Reference Standard

[5,5'-Bibenzo[d]oxazole]-2,2'(3H,3'H)-dione

[5,5'-Bibenzo[d]oxazole]-2,2'(3H,3'H)-dione

CAS: 206430-84-4
Formula: C₁₄H₈N₂O₄
MW: 268.2 g/mol

VQ-047614

Reference Standard

[6-(4-Phenylbutoxy)hexyl]benzylamine chemical structure

[6-(4-Phenylbutoxy)hexyl]benzylamine

CAS: 97664-55-6
Formula: C₂₃H₃₃NO
MW: 339.5 g/mol

VQ-042088

Reference Standard

[Abu]5-Cyclosporin chemical structure

[Abu]5-Cyclosporin

CAS: 437611-17-1
Formula: C₆₁H₁₀₉N₁₁O₁₂
MW: 1188.6 g/mol

VQ-025130

Reference Standard

[ASP9]-Bivalirudin chemical structure

[ASP9]-Bivalirudin

CAS: 1182140-65-3
Formula: C₂₅H₃₃NaO₇
MW: 468.5 g/mol

VQ-043072

Reference Standard

[Chloro(phosphono)methyl]phosphonic acid chemical structure

[Chloro(phosphono)methyl]phosphonic acid

CAS: 87591-00-2
Formula: CH₅ClO₆P₂
MW: 210.45 g/mol

VQ-027260

Reference Standard

[D-Cys1]Vasopressin

[D-Cys1]Vasopressin

CAS: 66513-07-3
Formula: C₄₆H₆₅N₁₅O₁₂S₂
MW: 1084.25 g/mol

VQ-044290

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