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Impurities & Reference Standards

API Impurities

Source 1942 api impurities for research, QC and production, documented with COA and SDS.

14,252products

1,516in stock

COA + SDSwith every lot

Reference Standard

Angustifoline chemical structure

CAS: 550-43-6
Formula: C₁₄H₂₂N₂O
MW: 234.34 g/mol

VQ-027294

Reference Standard

Anhydro Dihydro Artemisinin chemical structure

Anhydro Dihydro Artemisinin

CAS: 82596-30-3
Formula: C₁₅H₂₂O₄
MW: 266.33 g/mol

VQ-020833

Reference Standard

Anhydro Pridinol chemical structure

Anhydro Pridinol

CAS: 13150-57-7
Formula: C₂₀H₂₃N
MW: 277.4 g/mol

VQ-033321

Reference Standard

Anhydrotetracycline Hydrochloride chemical structure

Anhydrotetracycline Hydrochloride

CAS: 13803-65-1
Formula: C₂₂H₂₃ClN₂O₇
MW: 462.9 g/mol

VQ-028313

Reference Standard

Anlotinib Amide Impurity

Anlotinib Amide Impurity

Formula: C₂₆H₂₃Cl₂N₃O₅
MW: 528.38 g/mol

In stock

Reference Standard

Anlotinib Benzyl Impurity

Anlotinib Benzyl Impurity

Formula: C₁₇H₁₄ClNO₂
MW: 299.75 g/mol

In stock

Reference Standard

Anlotinib Impurity 1

Anlotinib Impurity 1

CAS: 2205042-80-2
Formula: C₃₀H₂₈FN₃O₃
MW: 497.56 g/mol

In stock

Reference Standard

Anlotinib Impurity 2

Anlotinib Impurity 2

CAS: 2205042-45-9
Formula: C₂₂H₂₀FN₃O₃
MW: 393.41 g/mol

In stock

Reference Standard

Anlotinib Impurity D

Anlotinib Impurity D

CAS: 1058156-88-9
Formula: C₃₁H₂₈FN₃O₅
MW: 541.6 g/mol

VQ-021602

Reference Standard

Annamycin chemical structure

CAS: 92689-49-1
Formula: C₂₆H₂₅IO₁₁
MW: 640.4 g/mol

VQ-045242

Reference Standard

Anthacrolein chemical structure

CAS: 38982-12-6
Formula: C₁₇H₁₂O
MW: 232.28 g/mol

VQ-043980

Reference Standard

Anti-Parallel Dimer-Octreotide

Anti-Parallel Dimer-Octreotide

CAS: 1926163-78-1
Formula: C₉₈H₁₃₂N₂₀O₂₀S₄
MW: 2038.48 g/mol

VQ-026982

Reference Standard

Antibiotic A 40926

Antibiotic A 40926

CAS: 102961-72-8
Formula: C₈₃H₈₆Cl₂N₈O₃₀
MW: 1746.5 g/mol

VQ-030009

Reference Standard

Antipyrine-4-peroxide chemical structure

Antipyrine-4-peroxide

CAS: 69124-27-2
Formula: C₁₁H₁₂N₂O₃
MW: 220.22 g/mol

VQ-043809

Reference Standard

Apalutamide Acid Impurity chemical structure

Apalutamide Acid Impurity

CAS: 1332391-04-4
Formula: C₂₀H₁₂F₄N₄O₃S
MW: 464.4 g/mol

VQ-024308

Reference Standard

Apalutamide Di-(2-fluoro-N-methylbenzamide) chemical structure

Apalutamide Di-(2-fluoro-N-methylbenzamide)

CAS: 2894796-76-8
Formula: C₂₉H₂₁F₅N₆O₃S
MW: 628.6 g/mol

VQ-044637

Reference Standard

Apalutamide Dithio Impurity chemical structure

Apalutamide Dithio Impurity

CAS: 2649802-40-2
Formula: C₂₁H₁₅F₄N₅OS₂
MW: 493.5 g/mol

VQ-029170

Reference Standard

Apalutamide Impurity 22 chemical structure

Apalutamide Impurity 22

CAS: 1950587-21-9
Formula: C₈H₂F₃N₃O
MW: 213.12 g/mol

VQ-047411

Reference Standard

Apalutamide Impurity 7 chemical structure

Apalutamide Impurity 7

CAS: 2227589-22-0
Formula: C₁₃H₁₅FN₂O₃
MW: 266.27 g/mol

In stock

Reference Standard

Apixaban 3-Chloro Aniline Acid Impurity

Apixaban 3-Chloro Aniline Acid Impurity

Formula: C₂₄H₂₁ClN₄O₄
MW: 464.9 g/mol

In stock

Reference Standard

Apixaban Amino Acid Impurity chemical structure

Apixaban Amino Acid Impurity

CAS: 2206825-87-6
Formula: C₂₅H₂₇N₅O₅
MW: 477.5 g/mol

In stock

Reference Standard

Apixaban Aminophenyl Impurity chemical structure

Apixaban Aminophenyl Impurity

CAS: 503615-07-4
Formula: C₂₂H₂₂N₄O₄
MW: 406.4 g/mol

In stock

Reference Standard

Apixaban Carboxylic Acid Impurity chemical structure

Apixaban Carboxylic Acid Impurity

CAS: 503614-92-4
Formula: C₂₅H₂₄N₄O₅
MW: 460.5 g/mol

In stock

Reference Standard

Apixaban Chloro Amine Impurity chemical structure

Apixaban Chloro Amine Impurity

CAS: 1801881-15-1
Formula: C₁₁H₁₁ClN₂O
MW: 222.67 g/mol

In stock

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