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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

Butyl Chloroformate chemical structure

Butyl Chloroformate

CAS: 592-34-7
Formula: C₅H₉ClO₂
MW: 136.58 g/mol

VQ-032780

Reference Standard

Butyl Methanesulfonate chemical structure

Butyl Methanesulfonate

CAS: 1912-32-9
Formula: C₅H₁₂O₃S
MW: 152.21 g/mol

VQ-023402

Reference Standard

Butylarticaine chemical structure

CAS: 47066-35-3
Formula: C₁₄H₂₂N₂O₃S
MW: 298.4 g/mol

VQ-035188

Reference Standard

Butyric Difluocortolone chemical structure

Butyric Difluocortolone

CAS: 61633-73-6
Formula: C₂₆H₃₄F₂O₅
MW: 464.5 g/mol

VQ-030200

Reference Standard

Cabazitaxel 10 DAB III Impurity

Cabazitaxel 10 DAB III Impurity

Formula: C₂₉H₃₆O₁₀
MW: 544.59 g/mol

In stock

Reference Standard

Cabazitaxel acetone chemical structure

Cabazitaxel acetone

CAS: 1426815-65-7
Formula: C₄₈H₆₃NO₁₅
MW: 894 g/mol

VQ-029572

Reference Standard

Cabazitaxel Dectroc Oxazolidine Impurity chemical structure

Cabazitaxel Dectroc Oxazolidine Impurity

CAS: 159262-93-8
Formula: C₄₆H₅₇NO₁₄
MW: 847.9 g/mol

VQ-035089

Reference Standard

Cabazitaxel Impurity (DiTroc) chemical structure

Cabazitaxel Impurity (DiTroc)

CAS: 95603-44-4
Formula: C₃₅H₃₈Cl₆O₁₄
MW: 895.4 g/mol

VQ-025355

Reference Standard

Cabazitaxel Impurity 15 chemical structure

Cabazitaxel Impurity 15

CAS: 859498-34-3
Formula: C₂₂H₂₅NO₆
MW: 399.4 g/mol

VQ-036068

Reference Standard

Cabazitaxel Impurity 44

Cabazitaxel Impurity 44

CAS: 870133-54-3
Formula: C₂₂H₂₅NO₆
MW: 399.4 g/mol

VQ-044404

Reference Standard

Cabazitaxel N-Acyl Impurity

Cabazitaxel N-Acyl Impurity

Formula: C₃₀H₄₅N₃O₅
MW: 527.7 g/mol

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Reference Standard

Cabazitaxel N-Formyl Impurity

Cabazitaxel N-Formyl Impurity

CAS: 3083803-40-8
Formula: C₄₁H₄₉NO₁₃
MW: 763.83 g/mol

VQ-047653

Reference Standard

Cabazitaxel TSC-1 Impurity chemical structure

Cabazitaxel TSC-1 Impurity

CAS: 67341-01-9
Formula: C₁₃H₁₉NO₃
MW: 237.29 g/mol

In stock

Reference Standard

Cabazitaxel TSC-4 Impurity chemical structure

Cabazitaxel TSC-4 Impurity

CAS: 143527-70-2
Formula: C₁₇H₂₃NO₅
MW: 321.4 g/mol

In stock

Reference Standard

Cabergoline Isomer chemical structure

Cabergoline Isomer

CAS: 81409-91-8
Formula: C₂₆H₃₇N₅O₂
MW: 451.6 g/mol

VQ-024718

Reference Standard

Cabotegravir Diastereomer-1

Cabotegravir Diastereomer-1

Formula: C₁₉H₁₇F₂N₃O₅
MW: 405.35 g/mol

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Reference Standard

Cabotegravir Diastereomer-2

Cabotegravir Diastereomer-2

Formula: C₁₉H₁₇F₂N₃O₅
MW: 405.35 g/mol

In stock

Reference Standard

Cabotegravir Hydroxy Impurity chemical structure

Cabotegravir Hydroxy Impurity

CAS: 2883234-39-5
Formula: C₁₉H₁₇F₂N₃O₅
MW: 405.4 g/mol

In stock

Reference Standard

Cabotegravir Impurity 5 chemical structure

Cabotegravir Impurity 5

CAS: 1616340-68-1
Formula: C₂₀H₂₂F₂N₂O₇
MW: 440.4 g/mol

VQ-047658

Reference Standard

Cabotegravir RS Isomer chemical structure

Cabotegravir RS Isomer

CAS: 1309560-64-2
Formula: C₁₉H₁₇F₂N₃O₅
MW: 405.4 g/mol

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Reference Standard

Cabotegravir S- Isomer chemical structure

Cabotegravir S- Isomer

CAS: 1646862-08-9
Formula: C₁₉H₁₇F₂N₃O₅
MW: 405.4 g/mol

VQ-021949

Reference Standard

Cabozantinib Des Cyclopropanyl Acetamide Impurity chemical structure

Cabozantinib Des Cyclopropanyl Acetamide Impurity

CAS: 651054-52-3
Formula: C₁₉H₁₈N₂O₄
MW: 338.4 g/mol

VQ-029576

Reference Standard

Cabozantinib Des Fluoro Impurity chemical structure

Cabozantinib Des Fluoro Impurity

CAS: 849221-94-9
Formula: C₂₈H₂₅N₃O₅
MW: 483.5 g/mol

VQ-021038

Reference Standard

Cabozantinib Hydroxy Impurity chemical structure

Cabozantinib Hydroxy Impurity

CAS: 849217-60-3
Formula: C₁₇H₁₅FN₂O₃
MW: 314.31 g/mol

In stock

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