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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

Clopidogrel Impurity B

Clopidogrel Impurity B

CAS: 402746-56-9
Formula: C₁₅H₁₈ClNO₆S₂
MW: 407.89 g/mol

VQ-029881

Reference Standard

Clopidogrel Impurity B chemical structure

Clopidogrel Impurity B

CAS: 141109-18-4
Formula: C₁₅H₁₇Cl₂NO₂S
MW: 346.3 g/mol

VQ-035203

Reference Standard

Clopidogrel Impurity CHOX

Clopidogrel Impurity CHOX

CAS: 1251822-13-5
Formula: C₁₆H₁₃ClNO₂S⁺
MW: 318.79 g/mol

VQ-036408

Reference Standard

Clopidogrel Impurity-37

Clopidogrel Impurity-37

Formula: C₂₈H₂₈Cl₂N₂O₄S
MW: 559.5 g/mol

VQ-004666

Reference Standard

Clopidogrel N-Oxide chemical structure

Clopidogrel N-Oxide

CAS: 1319197-71-1
Formula: C₁₆H₁₆ClNO₃S
MW: 337.8 g/mol

VQ-029899

Reference Standard

Clopidogrel Oxidative (Impurity-F) chemical structure

Clopidogrel Oxidative (Impurity-F)

CAS: 1030894-82-6
Formula: C₁₆H₁₅ClNO₂S⁺
MW: 320.8 g/mol

VQ-047845

Reference Standard

Clopidogrel Pyridinium Bromide Impurity chemical structure

Clopidogrel Pyridinium Bromide Impurity

CAS: 2418591-12-3
Formula: C₁₆H₁₅BrClNO₂S
MW: 400.7 g/mol

VQ-029882

Reference Standard

Clopidogrel Sulfonated Impurity chemical structure

Clopidogrel Sulfonated Impurity

CAS: 2173294-69-2
Formula: C₁₆H₁₆ClNO₅S₂
MW: 401.9 g/mol

VQ-029886

Reference Standard

Clopidogrel Thiol Metabolite H4 Isomer Formate chemical structure

Clopidogrel Thiol Metabolite H4 Isomer Formate

CAS: 1801260-45-6
Formula: C₁₇H₂₀ClNO₆S
MW: 401.9 g/mol

VQ-036418

Reference Standard

Clopidogrel USP Related Compond B (Freebase) chemical structure

Clopidogrel USP Related Compond B (Freebase)

CAS: 144457-43-2
Formula: C₁₆H₁₆ClNO₂S
MW: 321.8 g/mol

VQ-004667

Reference Standard

Clopidogrel USP Related Compond B (Hydrochloride) chemical structure

Clopidogrel USP Related Compond B (Hydrochloride)

CAS: 144750-52-7
Formula: C₁₆H₁₇Cl₂NO₂S
MW: 358.3 g/mol

In stock

Reference Standard

Clopidogrel-d4 Carboxylic Acid chemical structure

Clopidogrel-d4 Carboxylic Acid

CAS: 1246814-52-7
Formula: C₁₅H₁₄ClNO₂S
MW: 311.8 g/mol

VQ-047854

Reference Standard

Clopidogrel-d4 Hydrogensulfate chemical structure

Clopidogrel-d4 Hydrogensulfate

CAS: 1219274-96-0
Formula: C₁₆H₁₈ClNO₆S₂
MW: 423.9 g/mol

VQ-036419

Reference Standard

Clopidol chemical structure

CAS: 2971-90-6
Formula: C₇H₇Cl₂NO
MW: 192.04 g/mol

VQ-040908

Reference Standard

Cloprostenol chemical structure

CAS: 40665-92-7
Formula: C₂₂H₂₉ClO₆
MW: 424.9 g/mol

VQ-047855

Reference Standard

Cloquintocet chemical structure

CAS: 88349-88-6
Formula: C₁₁H₈ClNO₃
MW: 237.64 g/mol

VQ-040673

Reference Standard

Clorazepate EP Impurity C chemical structure

Clorazepate EP Impurity C

CAS: 5606-55-3
Formula: C₁₈H₁₅ClN₂O₃
MW: 342.8 g/mol

VQ-029903

Reference Standard

Clorsulon chemical structure

CAS: 60200-06-8
Formula: C₈H₈Cl₃N₃O₄S₂
MW: 380.7 g/mol

VQ-029904

Reference Standard

Clorsulon-13C6 chemical structure

CAS: 1325559-24-7
Formula: C₁₃H₁₀Cl₂N₂O₅
MW: 351.09 g/mol

VQ-047856

Reference Standard

Closantel chemical structure

CAS: 57808-65-8
Formula: C₂₂H₁₄Cl₂I₂N₂O₂
MW: 663.1 g/mol

VQ-029905

Reference Standard

Closantel EP Impurity B chemical structure

Closantel EP Impurity B

CAS: 61437-85-2
Formula: C₁₅H₁₂Cl₂N₂
MW: 291.2 g/mol

VQ-025066

Reference Standard

Closantel EP Impurity C chemical structure

Closantel EP Impurity C

CAS: 2512219-95-1
Formula: C₂₂H₁₅Cl₂I₂NO₄
MW: 682.1 g/mol

In stock

Reference Standard

Closantel EP Impurity D chemical structure

Closantel EP Impurity D

CAS: 2518220-00-1
Formula: C₂₂H₁₆Cl₂I₂N₂O₃
MW: 681.1 g/mol

VQ-036421

Reference Standard

Closantel EP Impurity F chemical structure

Closantel EP Impurity F

CAS: 50274-07-2
Formula: C₂₁H₁₃Cl₂I₂NO₃
MW: 652 g/mol

In stock

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