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Impurities & Reference Standards

Pharmacopoeial and non-pharmacopoeial impurities, metabolites, nitrosamines and working standards with characterisation data for QC and regulatory work.

28,554products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,252 Pharmacopeial Impurities (EP / USP / BP) 4,401 Nitrosamine Impurities 650 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,612 Metabolites & Degradation Products 4,146 API Reference Standards 3,493

Reference Standard

Febuxostat-d9 chemical structure

CAS: 1246819-50-0
Formula: C₁₆H₁₆N₂O₃S
MW: 325.4 g/mol

VQ-037213

Reference Standard

Fedratinib Impurity 1 chemical structure

Fedratinib Impurity 1

CAS: 50609-01-3
Formula: C₁₂H₁₈N₂O
MW: 206.28 g/mol

VQ-044490

Reference Standard

Fedratinib-D9 chemical structure

CAS: 2226875-48-3
Formula: C₂₇H₃₆N₆O₃S
MW: 533.7 g/mol

VQ-037214

Reference Standard

Felbamate chemical structure

CAS: 25451-15-4
Formula: C₁₁H₁₄N₂O₄
MW: 238.24 g/mol

VQ-030694

Reference Standard

Felbamate Dimer chemical structure

Felbamate Dimer

CAS: 1796927-91-7
Formula: C₂₁H₂₄N₂O₇
MW: 416.4 g/mol

VQ-025746

Reference Standard

Felbamate USP Related Compound A chemical structure

Felbamate USP Related Compound A

CAS: 25451-53-0
Formula: C₁₀H₁₃NO₃
MW: 195.21 g/mol

VQ-025747

Reference Standard

Felbamate-d4 chemical structure

CAS: 106817-52-1
Formula: C₁₁H₁₄N₂O₄
MW: 242.26 g/mol

VQ-037216

Reference Standard

Felbinac chemical structure

CAS: 5728-52-9
Formula: C₁₄H₁₂O₂
MW: 212.24 g/mol

VQ-030695

Reference Standard

Felbinac EP Impurity A chemical structure

Felbinac EP Impurity A

CAS: 92-91-1
Formula: C₁₄H₁₂O
MW: 196.24 g/mol

VQ-037217

Reference Standard

Felodipine chemical structure

CAS: 72509-76-3
Formula: C₁₈H₁₉Cl₂NO₄
MW: 384.2 g/mol

VQ-025749

Reference Standard

Felodipine EP Impurity A chemical structure

Felodipine EP Impurity A

CAS: 96382-71-7
Formula: C₁₈H₁₇Cl₂NO₄
MW: 382.2 g/mol

VQ-025750

Reference Standard

Felodipine EP Impurity B chemical structure

Felodipine EP Impurity B

CAS: 91189-59-2
Formula: C₁₇H₁₇Cl₂NO₄
MW: 370.2 g/mol

VQ-022635

Reference Standard

Felodipine EP Impurity C chemical structure

Felodipine EP Impurity C

CAS: 79925-38-5
Formula: C₁₉H₂₁Cl₂NO₄
MW: 398.3 g/mol

VQ-025751

Reference Standard

Felypressin chemical structure

CAS: 56-59-7
Formula: C₄₆H₆₅N₁₃O₁₁S₂
MW: 1040.2 g/mol

VQ-048353

Reference Standard

Fenamiphos chemical structure

CAS: 22224-92-6
Formula: C₁₃H₂₂NO₃PS
MW: 303.36 g/mol

VQ-039430

Reference Standard

Fenamiphos Sulfoxide chemical structure

Fenamiphos Sulfoxide

CAS: 31972-43-7
Formula: C₁₃H₂₂NO₄PS
MW: 319.36 g/mol

VQ-043170

Reference Standard

Fenbendazole chemical structure

CAS: 43210-67-9
Formula: C₁₅H₁₃N₃O₂S
MW: 299.3 g/mol

VQ-022636

Reference Standard

Fenbendazole impurity 1 chemical structure

Fenbendazole impurity 1

CAS: 53065-28-4
Formula: C₁₃H₁₁N₃S
MW: 241.31 g/mol

VQ-037221

Reference Standard

Fenbendazole Sulfone chemical structure

Fenbendazole Sulfone

CAS: 54029-20-8
Formula: C₁₅H₁₃N₃O₄S
MW: 331.3 g/mol

VQ-021226

Reference Standard

Fenbuconazole chemical structure

CAS: 114369-43-6
Formula: C₁₉H₁₇ClN₄
MW: 336.8 g/mol

VQ-040860

Reference Standard

Fenbufen chemical structure

CAS: 36330-85-5
Formula: C₁₆H₁₄O₃
MW: 254.28 g/mol

VQ-037222

Reference Standard

Fenchone chemical structure

CAS: 1195-79-5
Formula: C₁₀H₁₆O
MW: 152.23 g/mol

VQ-044285

Reference Standard

Fendizoic Acid chemical structure

CAS: 84627-04-3
Formula: C₂₀H₁₄O₄
MW: 318.3 g/mol

VQ-037997

Reference Standard

Fenebrutinib chemical structure

CAS: 1434048-34-6
Formula: C₃₇H₄₄N₈O₄
MW: 664.8 g/mol

VQ-037614

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