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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

Cholic Acid Acyl Glucuronide chemical structure

Cholic Acid Acyl Glucuronide

CAS: 208038-30-6
Formula: C₃₀H₄₈O₁₁
MW: 584.7 g/mol

VQ-052393

Reference Standard

Cholic Acid Ethyl Ester chemical structure

Cholic Acid Ethyl Ester

CAS: 47676-48-2
Formula: C₂₆H₄₄O₅
MW: 436.6 g/mol

VQ-031017

Reference Standard

Cholic Acid Impurity (3-alpha-Hydroxy-12-Oxo-5-beta-Cholanoic Acid) chemical structure

Cholic Acid Impurity (3-alpha-Hydroxy-12-Oxo-5-beta-Cholanoic Acid)

CAS: 5130-29-0
Formula: C₂₄H₃₈O₄
MW: 390.6 g/mol

VQ-044987

Reference Standard

Cholic acid-d4 chemical structure

CAS: 116380-66-6
Formula: C₂₄H₄₀O₅
MW: 412.6 g/mol

VQ-041194

Reference Standard

Choline Fenofibrate chemical structure

Choline Fenofibrate

CAS: 856676-23-8
Formula: C₂₂H₂₈ClNO₅
MW: 421.9 g/mol

VQ-025759

Reference Standard

Choline Salicylate chemical structure

Choline Salicylate

CAS: 2016-36-6
Formula: C₁₂H₁₉NO₄
MW: 241.28 g/mol

VQ-032882

Reference Standard

Choline-1,1,2,2-D4 bromide chemical structure

Choline-1,1,2,2-D4 bromide

CAS: 285979-69-3
Formula: C₅H₁₄BrNO
MW: 188.1 g/mol

VQ-050951

Reference Standard

Choline-d4 Chloride chemical structure

Choline-d4 Chloride

CAS: 285979-70-6
Formula: C₅H₁₄ClNO
MW: 143.65 g/mol

VQ-041248

Reference Standard

Choline-d9 Chloride chemical structure

Choline-d9 Chloride

CAS: 61037-86-3
Formula: C₅H₁₄ClNO
MW: 148.68 g/mol

VQ-041131

Reference Standard

Chondroitin Sulfate Sodium Salt

Chondroitin Sulfate Sodium Salt

CAS: 9082-07-9
Formula: (C₁₄H₁₉NO₁₄SNa₂) n

VQ-036287

Reference Standard

Chromozym Try chemical structure

CAS: 86170-43-6
Formula: C₂₉H₄₀N₈O₉
MW: 644.7 g/mol

VQ-050109

Reference Standard

Chrysene chemical structure

CAS: 218-01-9
Formula: C₁₈H₁₂
MW: 228.3 g/mol

VQ-038845

Reference Standard

Chrysene-d12 chemical structure

CAS: 1719-03-5
Formula: C₁₈H₁₂
MW: 240.4 g/mol

VQ-038846

Reference Standard

Cibenzoline chemical structure

CAS: 53267-01-9
Formula: C₁₈H₁₈N₂
MW: 262.3 g/mol

VQ-043793

Reference Standard

Ciclesonide chemical structure

CAS: 126544-47-6
Formula: C₃₂H₄₄O₇
MW: 540.7 g/mol

VQ-022167

Reference Standard

Ciclesonide EP Impurity A chemical structure

Ciclesonide EP Impurity A

CAS: 141845-81-0
Formula: C₃₂H₄₄O₇
MW: 540.7 g/mol

VQ-029785

Reference Standard

Ciclesonide EP Impurity B chemical structure

Ciclesonide EP Impurity B

CAS: 161115-59-9
Formula: C₂₈H₃₈O₆
MW: 470.6 g/mol

VQ-022168

Reference Standard

Ciclesonide-d7 chemical structure

CAS: 1225382-70-6
Formula: C₃₂H₄₄O₇
MW: 547.7 g/mol

VQ-029786

Reference Standard

Ciclopirox chemical structure

CAS: 29342-05-0
Formula: C₁₂H₁₇NO₂
MW: 207.27 g/mol

VQ-024962

Reference Standard

Ciclopirox EP Impurity A chemical structure

Ciclopirox EP Impurity A

CAS: 1823487-53-1
Formula: C₁₂H₁₉NO₃
MW: 225.28 g/mol

VQ-024961

Reference Standard

Ciclopirox EP Impurity B chemical structure

Ciclopirox EP Impurity B

CAS: 14818-35-0
Formula: C₁₂H₁₆O₂
MW: 192.25 g/mol

VQ-022169

Reference Standard

Ciclopirox EP Impurity C chemical structure

Ciclopirox EP Impurity C

CAS: 67587-24-0
Formula: C₁₂H₁₇NO
MW: 191.27 g/mol

VQ-022170

Reference Standard

Ciclopirox Ethanolamine chemical structure

Ciclopirox Ethanolamine

CAS: 41621-49-2
Formula: C₁₄H₂₄N₂O₃
MW: 268.35 g/mol

VQ-024960

Reference Standard

Cidofovir chemical structure

CAS: 113852-37-2
Formula: C₈H₁₄N₃O₆P
MW: 279.19 g/mol

VQ-036292

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