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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

Candesartan Ethyl Ester N2-Trityl Analog chemical structure

Candesartan Ethyl Ester N2-Trityl Analog

CAS: 1797985-81-9
Formula: C₄₅H₃₈N₆O₃
MW: 710.8 g/mol

VQ-035019

Reference Standard

Candesartan Impurity 4 chemical structure

Candesartan Impurity 4

CAS: 139481-38-2
Formula: C₂₇H₂₅N₃O₆
MW: 487.5 g/mol

VQ-029604

Reference Standard

Candesartan Methyl Ester Desethyl Analog chemical structure

Candesartan Methyl Ester Desethyl Analog

CAS: 1203674-06-9
Formula: C₂₃H₁₈N₆O₃
MW: 426.4 g/mol

VQ-024738

Reference Standard

Candesartan Methyl Ester Methoxy Analog chemical structure

Candesartan Methyl Ester Methoxy Analog

CAS: 139481-75-7
Formula: C₂₄H₂₀N₆O₃
MW: 440.5 g/mol

VQ-029610

Reference Standard

Candesartan N1-Ethyl Impurity chemical structure

Candesartan N1-Ethyl Impurity

CAS: 1246817-38-8
Formula: C₂₆H₂₄N₆O₃
MW: 468.5 g/mol

VQ-024748

Reference Standard

Candesartan N2-Ethyl Impurity chemical structure

Candesartan N2-Ethyl Impurity

CAS: 1246819-02-2
Formula: C₂₆H₂₄N₆O₃
MW: 468.5 g/mol

VQ-024742

Reference Standard

Candesartan N2-Glucuronide chemical structure

Candesartan N2-Glucuronide

CAS: 180603-76-3
Formula: C₃₀H₂₈N₆O₉
MW: 616.6 g/mol

VQ-047673

Reference Standard

Candesartan N2-Trityl Impurity chemical structure

Candesartan N2-Trityl Impurity

CAS: 894806-43-0
Formula: C₄₃H₃₄N₆O₃
MW: 682.8 g/mol

VQ-036114

Reference Standard

Candesartan-d4 chemical structure

CAS: 1346604-70-3
Formula: C₂₄H₂₀N₆O₃
MW: 444.5 g/mol

VQ-029612

Reference Standard

Candesartan-d5 chemical structure

CAS: 1189650-58-5
Formula: C₂₄H₂₀N₆O₃
MW: 445.5 g/mol

VQ-036115

Reference Standard

Candicidin chemical structure

CAS: 1403-17-4
Formula: C₅₉H₈₄N₂O₁₈
MW: 1109.3 g/mol

VQ-045244

Reference Standard

Candoxatril chemical structure

CAS: 123122-55-4
Formula: C₂₉H₄₁NO₇
MW: 515.6 g/mol

VQ-036117

Reference Standard

Cangrelor chemical structure

CAS: 163706-06-7
Formula: C₁₇H₂₅Cl₂F₃N₅O₁₂P₃S₂
MW: 776.4 g/mol

VQ-034801

Reference Standard

Cangrelor Impurity A chemical structure

Cangrelor Impurity A

CAS: 847460-53-1
Formula: C₁₆H₂₃F₃N₅O₇PS₂
MW: 549.5 g/mol

VQ-021055

Reference Standard

Cangrelor Tetrasodium chemical structure

Cangrelor Tetrasodium

CAS: 163706-36-3
Formula: C₁₇H₂₁Cl₂F₃N₅Na₄O₁₂P₃S₂
MW: 864.3 g/mol

VQ-024749

Reference Standard

Cannabidiol C4 chemical structure

CAS: 60113-11-3
Formula: C₂₀H₂₈O₂
MW: 300.4 g/mol

VQ-044906

Reference Standard

Cannabidiol hydroxyquinone chemical structure

Cannabidiol hydroxyquinone

CAS: 137252-25-6
Formula: C₂₁H₂₈O₃
MW: 328.4 g/mol

VQ-044905

Reference Standard

Cannabidiol Impurity 18

Cannabidiol Impurity 18

CAS: 3035459-00-5
Formula: C₁₄H₂₁NaO₄
MW: 276.3 g/mol

VQ-047678

Reference Standard

Cannabidiolic acid chemical structure

Cannabidiolic acid

CAS: 1244-58-2
Formula: C₂₂H₃₀O₄
MW: 358.5 g/mol

VQ-029616

Reference Standard

Cannabidivarin chemical structure

CAS: 24274-48-4
Formula: C₁₉H₂₆O₂
MW: 286.4 g/mol

VQ-029620

Reference Standard

Cannabigerol chemical structure

CAS: 25654-31-3
Formula: C₂₁H₃₂O₂
MW: 316.5 g/mol

VQ-032649

Reference Standard

Cannabigerolic Acid chemical structure

Cannabigerolic Acid

CAS: 25555-57-1
Formula: C₂₂H₃₂O₄
MW: 360.5 g/mol

VQ-036126

Reference Standard

Canrenoic Acid chemical structure

CAS: 4138-96-9
Formula: C₂₂H₃₀O₄
MW: 358.5 g/mol

VQ-042265

Reference Standard

Cantharidin chemical structure

CAS: 56-25-7
Formula: C₁₀H₁₂O₄
MW: 196.2 g/mol

VQ-036127

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