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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

Carvedilol Impurity A chemical structure

Carvedilol Impurity A

CAS: 1198090-73-1
Formula: C₃₆H₄₃N₃O₇
MW: 629.7 g/mol

In stock

Reference Standard

Carvedilol Impurity B chemical structure

Carvedilol Impurity B

CAS: 918903-20-5
Formula: C₃₉H₃₉N₃O₆
MW: 645.7 g/mol

In stock

Reference Standard

Carvedilol Impurity C chemical structure

Carvedilol Impurity C

CAS: 72955-94-3
Formula: C₃₁H₃₂N₂O₄
MW: 496.6 g/mol

VQ-004617

Reference Standard

Carvedilol Impurity D chemical structure

Carvedilol Impurity D

CAS: 51997-51-4
Formula: C₁₅H₁₃NO₂
MW: 239.27 g/mol

In stock

Reference Standard

Carvedilol Impurity F chemical structure

Carvedilol Impurity F

CAS: 1059573-45-3
Formula: C₃₃H₃₆N₂O₆
MW: 556.6 g/mol

VQ-022043

Reference Standard

Carvedilol Ketone Impurity chemical structure

Carvedilol Ketone Impurity

CAS: 933442-50-3
Formula: C₂₄H₂₄N₂O₄
MW: 404.5 g/mol

VQ-029670

Reference Standard

CAS NO: | 4-(3-nitrophenyl) morpholin-3-one chemical structure

CAS NO: | 4-(3-nitrophenyl) morpholin-3-one

CAS: 845729-43-3
Formula: C₁₀H₁₀N₂O₄
MW: 222.2 g/mol

VQ-027854

Reference Standard

CAS NO: | 4-(trifluoromethyl)-10H-phenothiazine chemical structure

CAS NO: | 4-(trifluoromethyl)-10H-phenothiazine

CAS: 343-21-5
Formula: C₁₃H₈F₃NS
MW: 267.27 g/mol

VQ-037347

Reference Standard

Cascaroside A chemical structure

CAS: 53823-08-8
Formula: C₂₇H₃₂O₁₄
MW: 580.5 g/mol

VQ-032822

Reference Standard

Caspofungin Hydroxylamine Impurity chemical structure

Caspofungin Hydroxylamine Impurity

CAS: 1671884-42-6
Formula: C₅₂H₈₈N₁₀O₁₆
MW: 1109.3 g/mol

VQ-024826

Reference Standard

Caspofungin Impurity 13

Caspofungin Impurity 13

CAS: 1240611-93-1
Formula: C₅₄H₉₀N₁₀O₁₈
MW: 1167.4 g/mol

VQ-036180

Reference Standard

Caspofungin Impurity 16 chemical structure

Caspofungin Impurity 16

CAS: 1404083-47-1
Formula: C₅₂H₈₆N₁₀O₁₆
MW: 1107.3 g/mol

VQ-047704

Reference Standard

Caspofungin Impurity C chemical structure

Caspofungin Impurity C

CAS: 251095-73-5
Formula: C₅₂H₈₈N₁₀O₁₅
MW: 1093.3 g/mol

VQ-022047

Reference Standard

Caspofungin Pneumocandin B0 Impurity chemical structure

Caspofungin Pneumocandin B0 Impurity

CAS: 135575-42-7
Formula: C₅₀H₈₀N₈O₁₇
MW: 1065.2 g/mol

VQ-036178

Reference Standard

Caspofungin Pneumocandin C0 Impurity chemical structure

Caspofungin Pneumocandin C0 Impurity

CAS: 144074-96-4
Formula: C₅₀H₈₀N₈O₁₇
MW: 1065.2 g/mol

VQ-029675

Reference Standard

Catharanthine Tartrate chemical structure

Catharanthine Tartrate

CAS: 4168-17-6
Formula: C₄₆H₅₄N₄O₁₀
MW: 822.9 g/mol

VQ-042913

Reference Standard

Cathinone hydrochloride chemical structure

Cathinone hydrochloride

CAS: 72739-14-1
Formula: C₉H₁₂ClNO
MW: 185.65 g/mol

VQ-045138

Reference Standard

CBA-1 Impurity Precursor At DEM-3 Stage

CBA-1 Impurity Precursor At DEM-3 Stage

Formula: C₂₃H₂₁ClN₆O₂
MW: 448.9 g/mol

In stock

Reference Standard

CBA-1 Impurity Precursor At DEM-4 Stage

CBA-1 Impurity Precursor At DEM-4 Stage

Formula: C₃₇H₄₁N₉O₄
MW: 675.78 g/mol

VQ-004620

Reference Standard

CBA-1 Nitrasoamine Impurity chemical structure

CBA-1 Nitrasoamine Impurity

Formula: C₁₀H₁₃N₃O₃
MW: 223.23 g/mol

In stock

Reference Standard

CBT-1A-Cabazitaxel Impurity chemical structure

CBT-1A-Cabazitaxel Impurity

CAS: 183133-94-0
Formula: C₃₁H₄₀O₁₀
MW: 572.6 g/mol

In stock

Reference Standard

CBT-2A-Cabazitaxel Impurity chemical structure

CBT-2A-Cabazitaxel Impurity

CAS: 1373171-12-0
Formula: C₄₈H₆₁NO₁₄
MW: 876 g/mol

In stock

Reference Standard

CDP-N,N-dimethylethanolamine chemical structure

CDP-N,N-dimethylethanolamine

CAS: 3416-25-9
Formula: C₁₃H₂₄N₄O₁₁P₂
MW: 474.3 g/mol

VQ-022204

Reference Standard

Cediranib chemical structure

CAS: 288383-20-0
Formula: C₂₅H₂₇FN₄O₃
MW: 450.5 g/mol

VQ-043099

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