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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

Coumachlor chemical structure

CAS: 81-82-3
Formula: C₁₉H₁₅ClO₄
MW: 342.8 g/mol

VQ-047872

Reference Standard

Coumatetralyl chemical structure

CAS: 5836-29-3
Formula: C₁₉H₁₆O₃
MW: 292.3 g/mol

VQ-029931

Reference Standard

Coumestrol chemical structure

CAS: 479-13-0
Formula: C₁₅H₈O₅
MW: 268.22 g/mol

VQ-047873

Reference Standard

Creatine chemical structure

CAS: 57-00-1
Formula: C₄H₉N₃O₂
MW: 131.13 g/mol

VQ-032819

Reference Standard

Creatinine Phosphate disodium chemical structure

Creatinine Phosphate disodium

CAS: 19604-05-8
Formula: C₄H₆N₃Na₂O₄P
MW: 237.06 g/mol

VQ-039966

Reference Standard

Crinecerfont chemical structure

CAS: 752253-39-7
Formula: C₂₇H₂₈ClFN₂OS
MW: 483 g/mol

VQ-029932

Reference Standard

Crisaborole chemical structure

CAS: 906673-24-3
Formula: C₁₄H₁₀BNO₃
MW: 251.05 g/mol

VQ-029933

Reference Standard

Crisaborole Acid Impurity chemical structure

Crisaborole Acid Impurity

CAS: 906673-43-6
Formula: C₁₄H₁₁BO₅
MW: 270.05 g/mol

VQ-022263

Reference Standard

Crisaborole D4 chemical structure

CAS: 2268785-42-6
Formula: C₁₄H₁₀BNO₃
MW: 255.07 g/mol

VQ-047876

Reference Standard

Crisaborole Impurity 8

Crisaborole Impurity 8

CAS: 2247753-96-2
Formula: C₂₀H₂₄BrNO₂Si
MW: 418.41 g/mol

VQ-036447

Reference Standard

Crisaborole Impurity A chemical structure

Crisaborole Impurity A

CAS: 888967-63-3
Formula: C₁₄H₁₁NO₂
MW: 225.24 g/mol

In stock

Reference Standard

Crisaborole Impurity C chemical structure

Crisaborole Impurity C

CAS: 1187187-01-4
Formula: C₁₄H₁₅BClNO₃
MW: 291.54 g/mol

VQ-036445

Reference Standard

Crisaborole m-Isomer chemical structure

Crisaborole m-Isomer

CAS: 906673-42-5
Formula: C₁₄H₁₀BNO₃
MW: 251.05 g/mol

VQ-029934

Reference Standard

Crisaborole o-Isomer chemical structure

Crisaborole o-Isomer

CAS: 906673-30-1
Formula: C₁₄H₁₀BNO₃
MW: 251.05 g/mol

VQ-043125

Reference Standard

Crizotinib chemical structure

CAS: 877399-52-5
Formula: C₂₁H₂₂Cl₂FN₅O
MW: 450.3 g/mol

In stock

Reference Standard

Crizotinib Amine Impurity chemical structure

Crizotinib Amine Impurity

CAS: 877397-71-2
Formula: C₁₃H₁₁Cl₂FN₂O
MW: 301.14 g/mol

VQ-025092

Reference Standard

Crocin chemical structure

CAS: 42553-65-1
Formula: C₄₄H₆₄O₂₄
MW: 977 g/mol

VQ-039205

Reference Standard

Cromoglicic acid chemical structure

Cromoglicic acid

CAS: 16110-51-3
Formula: C₂₃H₁₆O₁₁
MW: 468.4 g/mol

VQ-042210

Reference Standard

Crotamiton chemical structure

CAS: 483-63-6
Formula: C₁₃H₁₇NO
MW: 203.28 g/mol

VQ-025095

Reference Standard

Crotamiton EP Impurity A chemical structure

Crotamiton EP Impurity A

CAS: 13936-71-5
Formula: C₁₃H₁₇NO
MW: 203.28 g/mol

VQ-025096

Reference Standard

Crotonobetaine Hydrochloride chemical structure

Crotonobetaine Hydrochloride

CAS: 6538-82-5
Formula: C₇H₁₄ClNO₂
MW: 179.64 g/mol

VQ-022960

Reference Standard

Crystal violet-d6 chemical structure

Crystal violet-d6

CAS: 1266676-01-0
Formula: C₂₅H₃₀ClN₃
MW: 414 g/mol

VQ-041235

Reference Standard

Cuminaldehyde chemical structure

CAS: 122-03-2
Formula: C₁₀H₁₂O
MW: 148.2 g/mol

VQ-040941

Reference Standard

Curcumin Glucuronide chemical structure

Curcumin Glucuronide

CAS: 227466-72-0
Formula: C₂₇H₂₈O₁₂
MW: 544.5 g/mol

VQ-036452

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