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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

Clozapine EP Impurity A chemical structure

Clozapine EP Impurity A

CAS: 50892-62-1
Formula: C₁₃H₉ClN₂O
MW: 244.67 g/mol

VQ-022253

Reference Standard

Clozapine EP Impurity B chemical structure

Clozapine EP Impurity B

CAS: 263366-81-0
Formula: C₃₀H₂₄Cl₂N₆
MW: 539.5 g/mol

VQ-022254

Reference Standard

Clozapine EP Impurity C chemical structure

Clozapine EP Impurity C

CAS: 6104-71-8
Formula: C₁₇H₁₇ClN₄
MW: 312.8 g/mol

VQ-022250

Reference Standard

Clozapine EP Impurity D chemical structure

Clozapine EP Impurity D

CAS: 65514-71-8
Formula: C₁₈H₂₁ClN₄O
MW: 344.8 g/mol

VQ-022252

Reference Standard

Clozapine N-Oxide chemical structure

Clozapine N-Oxide

CAS: 34233-69-7
Formula: C₁₈H₁₉ClN₄O
MW: 342.8 g/mol

VQ-022251

Reference Standard

Clozapine-d4 chemical structure

CAS: 204395-52-8
Formula: C₁₈H₁₉ClN₄
MW: 330.8 g/mol

VQ-043394

Reference Standard

Clozapine-d8 chemical structure

CAS: 1185053-50-2
Formula: C₁₈H₁₉ClN₄
MW: 334.9 g/mol

VQ-029914

Reference Standard

Cobamamide chemical structure

CAS: 13870-90-1
Formula: C₇₂H₁₀₀CoN₁₈O₁₇P
MW: 1579.6 g/mol

VQ-025103

Reference Standard

Cobicistat chemical structure

CAS: 1004316-88-4
Formula: C₄₀H₅₃N₇O₅S₂
MW: 776 g/mol

VQ-029915

Reference Standard

Cobicistat (S,R,S) Isomer

Cobicistat (S,R,S) Isomer

CAS: 3093141-59-1
Formula: C₄₀H₅₃N₇O₅S₂
MW: 776.02 g/mol

VQ-047859

Reference Standard

Cobicistat Impurity 1

Cobicistat Impurity 1

Formula: C₁₇H₂₈N₄O₅S
MW: 400.49 g/mol

In stock

Reference Standard

Cobicistat Impurity 2

Cobicistat Impurity 2

Formula: C₁₃H₂₄N₂O₅
MW: 288.34 g/mol

In stock

Reference Standard

Cobicistat on Colloidal silicon Dioxide Related Compound 7 chemical structure

Cobicistat on Colloidal silicon Dioxide Related Compound 7

CAS: 1004316-56-6
Formula: C₂₈H₃₀N₄O₄S₂
MW: 550.7 g/mol

In stock

Reference Standard

Cobimetinib chemical structure

CAS: 934660-93-2
Formula: C₂₁H₂₁F₃IN₃O₂
MW: 531.3 g/mol

VQ-022255

Reference Standard

Cobimetinib (racemate) chemical structure

Cobimetinib (racemate)

CAS: 934662-91-6
Formula: C₂₁H₂₁F₃IN₃O₂
MW: 531.3 g/mol

VQ-043741

Reference Standard

Cobimetinib Fumarate chemical structure

Cobimetinib Fumarate

CAS: 1369665-02-0
Formula: C₄₆H₄₆F₆I₂N₆O₈
MW: 1178.7 g/mol

VQ-036435

Reference Standard

Cobimetinib R Isomer chemical structure

Cobimetinib R Isomer

CAS: 934660-94-3
Formula: C₂₁H₂₁F₃IN₃O₂
MW: 531.3 g/mol

VQ-029921

Reference Standard

Cocarboxylase Tetrahydrate chemical structure

Cocarboxylase Tetrahydrate

CAS: 68684-55-9
Formula: C₁₂H₂₆N₄O₁₁P₂S
MW: 496.37 g/mol

VQ-032341

Reference Standard

Coenzyme Q11 chemical structure

CAS: 24663-35-2
Formula: C₆₄H₉₈O₄
MW: 931.5 g/mol

VQ-028572

Reference Standard

Coenzyme Q8 chemical structure

CAS: 2394-68-5
Formula: C₄₉H₇₄O₄
MW: 727.1 g/mol

VQ-035323

Reference Standard

Colchicine EP Impurity A chemical structure

Colchicine EP Impurity A

CAS: 7411-12-3
Formula: C₂₁H₂₃NO₆
MW: 385.4 g/mol

VQ-025074

Reference Standard

Colchicine EP Impurity D chemical structure

Colchicine EP Impurity D

CAS: 477-29-2
Formula: C₂₇H₃₃NO₁₁
MW: 547.5 g/mol

VQ-022146

Reference Standard

Colchicine EP Impurity E chemical structure

Colchicine EP Impurity E

CAS: 7336-33-6
Formula: C₂₁H₂₃NO₆
MW: 385.4 g/mol

VQ-022257

Reference Standard

Colchicine EP Impurity F chemical structure

Colchicine EP Impurity F

CAS: 477-27-0
Formula: C₂₁H₂₃NO₆
MW: 385.4 g/mol

VQ-022258

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