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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

1-(2,3-Dimethylphenyl)ethan-1-one chemical structure

1-(2,3-Dimethylphenyl)ethan-1-one

CAS: 2142-71-4
Formula: C₁₀H₁₂O
MW: 148.2 g/mol

VQ-038279

Reference Standard

1-(2,3-Dimethylphenyl)ethyl Chloride chemical structure

1-(2,3-Dimethylphenyl)ethyl Chloride

CAS: 60907-88-2
Formula: C₁₀H₁₃Cl
MW: 168.66 g/mol

VQ-038280

Reference Standard

1-(2,3,6-Trifluorophenyl)propan-2-one chemical structure

1-(2,3,6-Trifluorophenyl)propan-2-one

CAS: 1305324-34-8
Formula: C₉H₇F₃O
MW: 188.15 g/mol

VQ-045024

Reference Standard

1-(2,4-Dichlorophenyl) Piperazine chemical structure

1-(2,4-Dichlorophenyl) Piperazine

CAS: 1013-78-1
Formula: C₁₀H₁₂Cl₂N₂
MW: 231.12 g/mol

VQ-035123

Reference Standard

1-(2,4-Diethylphenyl)-2-methyl-3-(piperidin-1-yl)propan-1-one Hydrochloride chemical structure

1-(2,4-Diethylphenyl)-2-methyl-3-(piperidin-1-yl)propan-1-one Hydrochloride

CAS: 119651-20-6
Formula: C₁₉H₃₀ClNO
MW: 323.9 g/mol

VQ-025557

Reference Standard

1-(2,4-Diethylphenyl)Propan-1-One chemical structure

1-(2,4-Diethylphenyl)Propan-1-One

CAS: 1806315-57-0
Formula: C₁₃H₁₈O
MW: 190.28 g/mol

VQ-025555

Reference Standard

1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanol chemical structure

1-(2,4-Difluorophenyl)-2-(1H-1,2,4-triazol-1-yl)ethanol

CAS: 206050-23-9
Formula: C₁₀H₉F₂N₃O
MW: 225.19 g/mol

VQ-030772

Reference Standard

1-(2,4,5-Trifluorophenyl)propan-2-amine, (+/-) chemical structure

1-(2,4,5-Trifluorophenyl)propan-2-amine, (+/-)

CAS: 910409-20-0
Formula: C₉H₁₀F₃N
MW: 189.18 g/mol

VQ-033879

Reference Standard

1-(2,4,5-Trifluorophenyl)propan-2-one chemical structure

1-(2,4,5-Trifluorophenyl)propan-2-one

CAS: 1305324-02-0
Formula: C₉H₇F₃O
MW: 188.15 g/mol

VQ-033886

Reference Standard

1-(2,5 Dimethoxyphenyl)-2-aminoethanol hydrochloride chemical structure

1-(2,5 Dimethoxyphenyl)-2-aminoethanol hydrochloride

CAS: 60407-53-6
Formula: C₁₀H₁₆ClNO₃
MW: 233.69 g/mol

VQ-038395

Reference Standard

1-(2,5-Bis(2,2,2-trifluoroethoxy)phenyl)ethanone chemical structure

1-(2,5-Bis(2,2,2-trifluoroethoxy)phenyl)ethanone

CAS: 76784-40-2
Formula: C₁₂H₁₀F₆O₃
MW: 316.2 g/mol

VQ-025803

Reference Standard

1-(2,5-Dichlorophenyl)piperazine hydrochloride chemical structure

1-(2,5-Dichlorophenyl)piperazine hydrochloride

CAS: 119438-13-0
Formula: C₁₀H₁₃Cl₃N₂
MW: 267.6 g/mol

VQ-038825

Reference Standard

1-(2,6-Dichlorophenyl)guanidine chemical structure

1-(2,6-Dichlorophenyl)guanidine

CAS: 39075-78-0
Formula: C₇H₇Cl₂N₃
MW: 204.05 g/mol

VQ-029874

Reference Standard

1-(2,6-Dichlorophenyl)piperazine chemical structure

1-(2,6-Dichlorophenyl)piperazine

CAS: 63386-61-8
Formula: C₁₀H₁₂Cl₂N₂
MW: 231.12 g/mol

VQ-024360

Reference Standard

1-(2,6-Dimethylphenoxy)-2-propanone Oxime chemical structure

1-(2,6-Dimethylphenoxy)-2-propanone Oxime

CAS: 55304-19-3
Formula: C₁₁H₁₅NO₂
MW: 193.24 g/mol

VQ-026673

Reference Standard

1-(2'-Deoxy-3',5'-di-O-toluoyl-alpha-D-ribofuranosyl)-2-oxo-4-amino-1,2-dihydro-1,3,5-triazine chemical structure

1-(2'-Deoxy-3',5'-di-O-toluoyl-alpha-D-ribofuranosyl)-2-oxo-4-amino-1,2-dihydro-1,3,5-triazine

CAS: 40789-35-3
Formula: C₂₄H₂₄N₄O₆
MW: 464.5 g/mol

VQ-043701

Reference Standard

1-(3-(1,2-Dihydro-2-oxobenzo[d]imidazol-3-yl)propyl)-1H-benzo[d]imidazol-2(3H)-one chemical structure

1-(3-(1,2-Dihydro-2-oxobenzo[d]imidazol-3-yl)propyl)-1H-benzo[d]imidazol-2(3H)-one

CAS: 39677-10-6
Formula: C₁₇H₁₆N₄O₂
MW: 308.33 g/mol

VQ-036780

Reference Standard

1-(3-(2-Bromo-4-fluoro-5-(3-phenylureido)phenyl)-1-ethyl-2-oxo-1,2-dihydro-1,6-naphthyridin-7-yl)-1-methyl-3-phenylurea

1-(3-(2-Bromo-4-fluoro-5-(3-phenylureido)phenyl)-1-ethyl-2-oxo-1,2-dihydro-1,6-naphthyridin-7-yl)-1-methyl-3-phenylurea

CAS: 2657703-87-0
Formula: C₃₁H₂₆BrFN₆O₃
MW: 629.49 g/mol

VQ-044471

Reference Standard

1-(3-(4-(2-(Diethylamino)ethoxy)-3,5-diiodobenzoyl)benzofuran-2-yl)butan-1-one

1-(3-(4-(2-(Diethylamino)ethoxy)-3,5-diiodobenzoyl)benzofuran-2-yl)butan-1-one

CAS: 2231394-66-2
Formula: C₂₅H₂₇I₂NO₄
MW: 659.3 g/mol

VQ-029114

Reference Standard

1-(3-(Benzyloxy)phenyl)propan-1-one chemical structure

1-(3-(Benzyloxy)phenyl)propan-1-one

CAS: 37951-47-6
Formula: C₁₆H₁₆O₂
MW: 240.3 g/mol

VQ-023086

Reference Standard

1-(3-(Dimethylamino)propyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-5-carbaldehyde Oxime chemical structure

1-(3-(Dimethylamino)propyl)-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-5-carbaldehyde Oxime

CAS: 227954-88-3
Formula: C₂₀H₂₃FN₂O₂
MW: 342.4 g/mol

VQ-022556

Reference Standard

1-(3-(Trifluoromethyl)phenyl)propan-2-ol chemical structure

1-(3-(Trifluoromethyl)phenyl)propan-2-ol

CAS: 621-45-4
Formula: C₁₀H₁₁F₃O
MW: 204.19 g/mol

VQ-035004

Reference Standard

1-(3-Amino-4,5-dimethoxyphenyl)ethanone chemical structure

1-(3-Amino-4,5-dimethoxyphenyl)ethanone

CAS: 134611-49-7
Formula: C₁₀H₁₃NO₃
MW: 195.21 g/mol

VQ-032836

Reference Standard

1-(3-Aminophenyl)-3-morpholino-5,6-dihydropyridin-2(1H)-one chemical structure

1-(3-Aminophenyl)-3-morpholino-5,6-dihydropyridin-2(1H)-one

CAS: 2437650-75-2
Formula: C₁₅H₁₉N₃O₂
MW: 273.33 g/mol

VQ-047418

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