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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.

27,990products

6sub-categories

2,746in stock

COA + SDSwith every lot

API Impurities 14,098 Pharmacopeial Impurities (EP / USP / BP) 4,399 Nitrosamine Impurities 631 Stable Isotope Labelled Standards (Deuterated, 13C, 15N) 1,504 Metabolites & Degradation Products 3,922 API Reference Standards 3,436

Reference Standard

Zafirlukast ZAF-1 Impurity 1

Zafirlukast ZAF-1 Impurity 1

Formula: C₄₀H₄₄N₄O₇
MW: 692.8 g/mol

In stock

Reference Standard

Zafirlukast ZAF-3 Impurity-1

Zafirlukast ZAF-3 Impurity-1

Formula: C₃₉H₄₂N₄O₇.C₇H₉NO₂S
MW: 849.99 g/mol

VQ-006191

Reference Standard

Zafirlukast-ZAF-1 Impurity 2

Zafirlukast-ZAF-1 Impurity 2

Formula: C₃₅H₃₈N₂O₈
MW: 614.68 g/mol

In stock

Reference Standard

Zaleplon USP Related Compound C chemical structure

Zaleplon USP Related Compound C

CAS: 940951-54-2
Formula: C₁₇H₁₇N₅O₂
MW: 323.35 g/mol

VQ-034725

Reference Standard

Zaltoprofen chemical structure

CAS: 74711-43-6
Formula: C₁₇H₁₄O₃S
MW: 298.4 g/mol

VQ-034728

Reference Standard

Zaltoprofen Sulfoxide chemical structure

Zaltoprofen Sulfoxide

CAS: 134085-79-3
Formula: C₁₇H₁₄O₄S
MW: 314.4 g/mol

VQ-042990

Reference Standard

Zalunfiban chemical structure

CAS: 1448313-27-6
Formula: C₁₆H₁₈N₈O₂S
MW: 386.4 g/mol

VQ-042991

Reference Standard

Zanamivir chemical structure

CAS: 139110-80-8
Formula: C₁₂H₂₀N₄O₇
MW: 332.31 g/mol

VQ-034729

Reference Standard

Zanamivir EP Impurity C chemical structure

Zanamivir EP Impurity C

CAS: 130525-62-1
Formula: C₁₁H₁₈N₂O₇
MW: 290.27 g/mol

VQ-034924

Reference Standard

Zanamivir EP Impurity D chemical structure

Zanamivir EP Impurity D

CAS: 179531-53-4
Formula: C₁₂H₁₉N₃O₈
MW: 333.29 g/mol

VQ-044197

Reference Standard

Zanamivir EP Impurity H chemical structure

Zanamivir EP Impurity H

CAS: 179531-57-8
Formula: C₁₂H₂₀N₄O₇
MW: 332.31 g/mol

VQ-044198

Reference Standard

Zanamivir Hydrate chemical structure

Zanamivir Hydrate

CAS: 551942-41-7
Formula: C₁₂H₂₂N₄O₈
MW: 350.33 g/mol

VQ-042992

Reference Standard

Zanubrutinib chemical structure

CAS: 1691249-45-2
Formula: C₂₇H₂₉N₅O₃
MW: 471.5 g/mol

VQ-028771

Reference Standard

Zanubrutinib Amino Acid Impurity

Zanubrutinib Amino Acid Impurity

Formula: C₂₇H₃₁N₅O₄
MW: 489.57 g/mol

In stock

Reference Standard

Zanubrutinib De-BOC Acid Impurity

Zanubrutinib De-BOC Acid Impurity

Formula: C₂₃H₂₆N₄O
MW: 374.48 g/mol

In stock

Reference Standard

Zanubrutinib Diamide Impurity

Zanubrutinib Diamide Impurity

Formula: C₅₁H₅₆N₁₀O₅
MW: 889.05 g/mol

In stock

Reference Standard

Zasocitinib chemical structure

CAS: 2272904-53-5
Formula: C₂₃H₂₄N₈O₃
MW: 460.5 g/mol

VQ-042994

Reference Standard

Zavegepant chemical structure

CAS: 1337918-83-8
Formula: C₃₆H₄₆N₈O₃
MW: 638.8 g/mol

VQ-034730

Reference Standard

Zavegepant Desmethyl Impurity chemical structure

Zavegepant Desmethyl Impurity

CAS: 2923756-41-4
Formula: C₃₅H₄₄N₈O₃
MW: 624.8 g/mol

VQ-024046

Reference Standard

Zavegepant Hydrochloride chemical structure

Zavegepant Hydrochloride

CAS: 1414976-20-7
Formula: C₃₆H₄₇ClN₈O₃
MW: 675.3 g/mol

VQ-040115

Reference Standard

Zavegepant Impurity 11 chemical structure

Zavegepant Impurity 11

CAS: 3019989-24-0
Formula: C₄₀H₄₁N₇O₄
MW: 683.8 g/mol

VQ-034734

Reference Standard

Zearalenone chemical structure

CAS: 17924-92-4
Formula: C₁₈H₂₂O₅
MW: 318.4 g/mol

VQ-034735

Reference Standard

Zephirol chemical structure

CAS: 139-07-1
Formula: C₂₁H₃₈ClN
MW: 340 g/mol

VQ-034736

Reference Standard

Zeranol chemical structure

CAS: 26538-44-3
Formula: C₁₈H₂₆O₅
MW: 322.4 g/mol

VQ-042999

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