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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

Chlorzoxazone-d3 chemical structure

Chlorzoxazone-d3

CAS: 1185173-60-7
Formula: C₇H₄ClNO₂
MW: 172.58 g/mol

VQ-029769

Reference Standard

Chol-5-ene-3,24-diol, 3-(9-octadecenoate), [3β(Z)]

Chol-5-ene-3,24-diol, 3-(9-octadecenoate), [3β(Z)]

CAS: 90344-02-8
Formula: C₄₂H₇₂O₃
MW: 625 g/mol

VQ-044378

Reference Standard

Cholecalciferol Butyrate chemical structure

Cholecalciferol Butyrate

CAS: 31316-20-8
Formula: C₃₁H₅₀O₂
MW: 454.7 g/mol

VQ-022164

Reference Standard

Cholecalciferol EP Impurity A chemical structure

Cholecalciferol EP Impurity A

CAS: 22350-41-0
Formula: C₂₇H₄₄O
MW: 384.6 g/mol

VQ-022163

Reference Standard

Cholecalciferol EP Impurity C chemical structure

Cholecalciferol EP Impurity C

CAS: 5226-01-7
Formula: C₂₇H₄₄O
MW: 384.6 g/mol

VQ-024950

Reference Standard

Cholecalciferol EP Impurity D chemical structure

Cholecalciferol EP Impurity D

CAS: 22350-43-2
Formula: C₂₇H₄₄O
MW: 384.6 g/mol

VQ-021144

Reference Standard

Cholecalciferol EP Impurity E chemical structure

Cholecalciferol EP Impurity E

CAS: 17592-07-3
Formula: C₂₇H₄₄O
MW: 384.6 g/mol

VQ-021145

Reference Standard

Cholecalciferol Glucuronide chemical structure

Cholecalciferol Glucuronide

CAS: 57918-08-8
Formula: C₃₃H₅₂O₇
MW: 560.8 g/mol

VQ-035021

Reference Standard

Cholesta-3,5-diene chemical structure

Cholesta-3,5-diene

CAS: 747-90-0
Formula: C₂₇H₄₄
MW: 368.6 g/mol

VQ-027281

Reference Standard

Cholesterol chemical structure

CAS: 57-88-5
Formula: C₂₇H₄₆O
MW: 386.7 g/mol

In stock

Reference Standard

Cholesterol 3-Sulfate Sodium chemical structure

Cholesterol 3-Sulfate Sodium

CAS: 2864-50-8
Formula: C₂₇H₄₅NaO₄S
MW: 488.7 g/mol

VQ-032321

Reference Standard

Cholesterol 5alpha,6alpha-Epoxide chemical structure

Cholesterol 5alpha,6alpha-Epoxide

CAS: 1250-95-9
Formula: C₂₇H₄₆O₂
MW: 402.7 g/mol

VQ-029781

Reference Standard

Cholesterol 5beta,6beta-Epoxide chemical structure

Cholesterol 5beta,6beta-Epoxide

CAS: 4025-59-6
Formula: C₂₇H₄₆O₂
MW: 402.7 g/mol

VQ-029780

Reference Standard

Cholesterol Benzoate chemical structure

Cholesterol Benzoate

CAS: 604-32-0
Formula: C₃₄H₅₀O₂
MW: 490.8 g/mol

VQ-032720

Reference Standard

Cholesterol Caprylate chemical structure

Cholesterol Caprylate

CAS: 1182-42-9
Formula: C₃₅H₆₀O₂
MW: 512.8 g/mol

VQ-024957

Reference Standard

Cholesterol EP Impurity A chemical structure

Cholesterol EP Impurity A

CAS: 80-99-9
Formula: C₂₇H₄₆O
MW: 386.7 g/mol

VQ-024959

Reference Standard

Cholesterol EP Impurity B chemical structure

Cholesterol EP Impurity B

CAS: 313-04-2
Formula: C₂₇H₄₄O
MW: 384.6 g/mol

VQ-024952

Reference Standard

Cholesterol EP Impurity C chemical structure

Cholesterol EP Impurity C

CAS: 651-54-7
Formula: C₂₇H₄₄O
MW: 384.6 g/mol

VQ-029777

Reference Standard

Cholesterol Impurity 11 chemical structure

Cholesterol Impurity 11

CAS: 14214-69-8
Formula: C₂₇H₄₄O
MW: 384.6 g/mol

In stock

Reference Standard

Cholesterol Impurity 9

Cholesterol Impurity 9

CAS: 63908-96-3
Formula: C₂₇H₄₆O₂
MW: 402.7 g/mol

VQ-047779

Reference Standard

Cholesterol-2,2,3,4,4,6 D6 chemical structure

Cholesterol-2,2,3,4,4,6 D6

CAS: 92543-08-3
Formula: C₂₇H₄₆O
MW: 392.7 g/mol

VQ-047781

Reference Standard

Cholesterol-d7 chemical structure

CAS: 83199-47-7
Formula: C₂₇H₄₆O
MW: 393.7 g/mol

VQ-043392

Reference Standard

Cholesterol, cis-9-hexadecenoate chemical structure

Cholesterol, cis-9-hexadecenoate

CAS: 16711-66-3
Formula: C₄₃H₇₄O₂
MW: 623 g/mol

VQ-044383

Reference Standard

Cholesteryl oleate chemical structure

Cholesteryl oleate

CAS: 303-43-5
Formula: C₄₅H₇₈O₂
MW: 651.1 g/mol

VQ-040188

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