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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

Venetoclax Impurity 9 Hydrochloride Salt chemical structure

Venetoclax Impurity 9 Hydrochloride Salt

CAS: 2254393-29-6
Formula: C₃₃H₃₆Cl₂N₄O₃
MW: 607.6 g/mol

In stock

Reference Standard

Venetoclax KSM-II(Des chloro) chemical structure

Venetoclax KSM-II(Des chloro)

CAS: 2227206-05-3
Formula: C₁₉H₂₈N₂
MW: 284.4 g/mol

VQ-034564

Reference Standard

Venetoclax N-Hydroxylamine Derivative Impurity

Venetoclax N-Hydroxylamine Derivative Impurity

CAS: 3091160-40-3
Formula: C₄₅H₅₀ClN₇O₈S
MW: 884.44 g/mol

VQ-006146

Reference Standard

Venetoclax Nitro Impurity chemical structure

Venetoclax Nitro Impurity

CAS: 1257044-99-7
Formula: C₃₉H₃₈Cl₂N₆O₆S
MW: 789.7 g/mol

In stock

Reference Standard

Venetoclax Para Isomer chemical structure

Venetoclax Para Isomer

Formula: C₁₅H₁₁FN₂O₃
MW: 286.26 g/mol

In stock

Reference Standard

Venlafaxine Cyano Impurity chemical structure

Venlafaxine Cyano Impurity

CAS: 93413-76-4
Formula: C₁₅H₁₉NO₂
MW: 245.32 g/mol

VQ-028660

Reference Standard

Venlafaxine Desmethoxy Impurity

Venlafaxine Desmethoxy Impurity

CAS: 93413-82-2
Formula: C₁₆H₂₆ClNO
MW: 283.8 g/mol

VQ-034572

Reference Standard

Venlafaxine Hydroxy Nitrile Impurity chemical structure

Venlafaxine Hydroxy Nitrile Impurity

CAS: 1574357-68-8
Formula: C₁₆H₂₃NO
MW: 245.36 g/mol

VQ-042847

Reference Standard

Venlafaxine Impurity 14 Hydrochloride chemical structure

Venlafaxine Impurity 14 Hydrochloride

CAS: 1792228-90-0
Formula: C₂₄H₃₀ClNO₂
MW: 400 g/mol

VQ-034577

Reference Standard

Venlafaxine R-Isomer chemical structure

Venlafaxine R-Isomer

CAS: 93413-46-8
Formula: C₁₇H₂₇NO₂
MW: 277.4 g/mol

VQ-028664

Reference Standard

Venlafaxine S-Isomer chemical structure

Venlafaxine S-Isomer

CAS: 93413-44-6
Formula: C₁₇H₂₇NO₂
MW: 277.4 g/mol

VQ-028665

Reference Standard

Verapamil Impurity 10

Verapamil Impurity 10

CAS: 26056-32-6
Formula: C₁₂H₁₅NO
MW: 189.25 g/mol

VQ-042864

Reference Standard

Verapamil Impurity 12

Verapamil Impurity 12

CAS: 92040-70-5
Formula: C₁₃H₁₇NO₂
MW: 219.28 g/mol

VQ-042859

Reference Standard

Verapamil Impurity 13

Verapamil Impurity 13

CAS: 371214-67-4
Formula: C₁₃H₁₇NO₂
MW: 219.28 g/mol

VQ-042860

Reference Standard

Verapamil Impurity 14

Verapamil Impurity 14

CAS: 1082435-26-4
Formula: C₁₃H₁₇NO₂
MW: 219.28 g/mol

VQ-042861

Reference Standard

Verapamil Impurity 15

Verapamil Impurity 15

CAS: 120353-00-6
Formula: C₁₃H₁₇NO₂
MW: 219.28 g/mol

VQ-042862

Reference Standard

Verapamil Impurity 16

Verapamil Impurity 16

CAS: 2110666-93-6
Formula: C₁₃H₁₇NO₂
MW: 219.28 g/mol

VQ-042863

Reference Standard

Vericiguat Dicarbamate Impurity

Vericiguat Dicarbamate Impurity

Formula: C₂₁H₁₈F₂N₈O₄
MW: 484.42 g/mol

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Reference Standard

Vericiguat Urea Dicarbamate Impurity

Vericiguat Urea Dicarbamate Impurity

Formula: C₂₂H₁₆F₂N₈O₅
MW: 510.41 g/mol

In stock

Reference Standard

Vibegron Impurity 71 chemical structure

Vibegron Impurity 71

CAS: 1426289-21-5
Formula: C₁₈H₂₀N₂O
MW: 280.4 g/mol

VQ-042872

Reference Standard

Vibegron N-Boc (1R,2S)-hydroxy phenylhexynyl Impurity chemical structure

Vibegron N-Boc (1R,2S)-hydroxy phenylhexynyl Impurity

CAS: 1437235-58-9
Formula: C₁₇H₂₃NO₃
MW: 289.4 g/mol

VQ-034594

Reference Standard

Vicenin II chemical structure

CAS: 23666-13-9
Formula: C₂₇H₃₀O₁₅
MW: 594.5 g/mol

VQ-035096

Reference Standard

Vilanterol Dimer chemical structure

Vilanterol Dimer

CAS: 2762285-55-0
Formula: C₄₈H₆₄Cl₄N₂O₉
MW: 954.8 g/mol

VQ-024005

Reference Standard

Vilanterol Impurity 10

Vilanterol Impurity 10

CAS: 452342-07-3
Formula: C₂₅H₃₇NO₃Si
MW: 427.7 g/mol

VQ-042880

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