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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

Chlorpyriphos-methyl chemical structure

Chlorpyriphos-methyl

CAS: 5598-13-0
Formula: C₇H₇Cl₃NO₃PS
MW: 322.5 g/mol

VQ-027234

Reference Standard

Chlortalidone EP Impurity A chemical structure

Chlortalidone EP Impurity A

CAS: 345930-32-7
Formula: C₁₄H₉ClO₆S
MW: 340.7 g/mol

VQ-022161

Reference Standard

Chlortalidone EP Impurity E chemical structure

Chlortalidone EP Impurity E

CAS: 82875-49-8
Formula: C₁₄H₁₁ClN₂O₃S
MW: 322.8 g/mol

VQ-021139

Reference Standard

Chlortalidone EP Impurity G chemical structure

Chlortalidone EP Impurity G

CAS: 16289-13-7
Formula: C₁₄H₉Cl₂NO₂
MW: 294.1 g/mol

VQ-021140

Reference Standard

Chlortalidone EP Impurity H chemical structure

Chlortalidone EP Impurity H

CAS: 2200280-98-2
Formula: C₁₇H₁₇ClN₂O₄S
MW: 380.8 g/mol

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Reference Standard

Chlortalidone EP Impurity I chemical structure

Chlortalidone EP Impurity I

CAS: 2514668-27-8
Formula: C₁₇H₁₆ClNO₅S
MW: 381.8 g/mol

VQ-022160

Reference Standard

Chlortalidone Impurity 9 chemical structure

Chlortalidone Impurity 9

CAS: 5543-24-8
Formula: C₁₄H₉ClO₃
MW: 260.67 g/mol

VQ-047767

Reference Standard

Chlortalidone Sulfochloro Impurity chemical structure

Chlortalidone Sulfochloro Impurity

CAS: 68592-12-1
Formula: C₁₄H₈Cl₂O₅S
MW: 359.2 g/mol

VQ-029761

Reference Standard

Chlortetracycline chemical structure

Chlortetracycline

CAS: 57-62-5
Formula: C₂₂H₂₃ClN₂O₈
MW: 478.9 g/mol

VQ-029766

Reference Standard

Chlortetracycline EP Impurity A chemical structure

Chlortetracycline EP Impurity A

CAS: 14297-93-9
Formula: C₂₂H₂₃ClN₂O₈
MW: 478.9 g/mol

VQ-034181

Reference Standard

Chlortetracycline EP Impurity H chemical structure

Chlortetracycline EP Impurity H

CAS: 7301-38-4
Formula: C₂₃H₂₄ClNO₈
MW: 477.9 g/mol

VQ-036274

Reference Standard

Chlortetracycline EP Impurity K chemical structure

Chlortetracycline EP Impurity K

CAS: 81163-11-3
Formula: C₂₂H₂₁ClN₂O₇
MW: 460.9 g/mol

VQ-044821

Reference Standard

Chlortetracycline Hydrochloride chemical structure

Chlortetracycline Hydrochloride

CAS: 64-72-2
Formula: C₂₂H₂₄Cl₂N₂O₈
MW: 515.3 g/mol

VQ-024947

Reference Standard

Chlortetracycline Hydrochloride EP Impurity G chemical structure

Chlortetracycline Hydrochloride EP Impurity G

CAS: 514-53-4
Formula: C₂₂H₂₃ClN₂O₈
MW: 478.9 g/mol

VQ-036275

Reference Standard

Chlorthalidone acid methyl ester impurity chemical structure

Chlorthalidone acid methyl ester impurity

CAS: 92433-89-1
Formula: C₁₅H₁₂ClNO₅S
MW: 353.8 g/mol

VQ-029767

Reference Standard

Chlorthalidone EP Impurity B chemical structure

Chlorthalidone EP Impurity B

CAS: 5270-74-6
Formula: C₁₄H₁₀ClNO₅S
MW: 339.8 g/mol

VQ-021138

Reference Standard

Chlorthalidone EP Impurity C chemical structure

Chlorthalidone EP Impurity C

CAS: 92874-73-2
Formula: C₁₆H₁₄ClNO₅S
MW: 367.8 g/mol

VQ-021141

Reference Standard

Chlorthalidone EP Impurity F chemical structure

Chlorthalidone EP Impurity F

CAS: 1796929-84-4
Formula: C₂₈H₁₉Cl₂N₃O₈S₂
MW: 660.5 g/mol

VQ-021143

Reference Standard

Chlorthalidone Impurity J chemical structure

Chlorthalidone Impurity J

CAS: 956-92-3
Formula: C₁₄H₁₀ClNO₂
MW: 259.69 g/mol

VQ-021142

Reference Standard

Chlorthalidone Sulfonyl Chloride Impuriy chemical structure

Chlorthalidone Sulfonyl Chloride Impuriy

CAS: 82875-50-1
Formula: C₁₄H₉Cl₂NO₃S
MW: 342.2 g/mol

VQ-029764

Reference Standard

Chlorthalidone USP chemical structure

Chlorthalidone USP

CAS: 77-36-1
Formula: C₁₄H₁₁ClN₂O₄S
MW: 338.8 g/mol

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Reference Standard

Chlorthalidone-d4 chemical structure

Chlorthalidone-d4

CAS: 1794941-44-8
Formula: C₁₄H₁₁ClN₂O₄S
MW: 342.8 g/mol

VQ-029765

Reference Standard

Chlorthion chemical structure

CAS: 500-28-7
Formula: C₈H₉ClNO₅PS
MW: 297.65 g/mol

VQ-045187

Reference Standard

Chlorzoxazone WS chemical structure

Chlorzoxazone WS

CAS: 95-25-0
Formula: C₇H₄ClNO₂
MW: 169.56 g/mol

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