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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

Citalopram EP Impurity D

Citalopram EP Impurity D

CAS: 144025-14-9
Formula: C₁₉H₂₀ClFN₂O
MW: 346.83 g/mol

VQ-025609

Reference Standard

Citalopram EP Impurity E chemical structure

Citalopram EP Impurity E

CAS: 64169-45-5
Formula: C₁₉H₂₁ClFNO
MW: 333.8 g/mol

VQ-029829

Reference Standard

Citalopram EP Impurity E chemical structure

Citalopram EP Impurity E

CAS: 64169-46-6
Formula: C₂₁H₂₃ClFNO₅
MW: 423.9 g/mol

VQ-045301

Reference Standard

Citalopram EP Impurity E (HBr salt) chemical structure

Citalopram EP Impurity E (HBr salt)

CAS: 1332724-08-9
Formula: C₁₉H₂₂BrClFNO
MW: 414.7 g/mol

VQ-021171

Reference Standard

Citalopram EP Impurity E Oxalate chemical structure

Citalopram EP Impurity E Oxalate

CAS: 1329612-81-8
Formula: C₂₁H₂₃ClFNO₅
MW: 423.9 g/mol

VQ-029832

Reference Standard

Citalopram EP Impurity F chemical structure

Citalopram EP Impurity F

CAS: 64169-39-7
Formula: C₁₉H₂₁BrFNO
MW: 378.3 g/mol

VQ-022201

Reference Standard

Citalopram EP Impurity F Oxalate chemical structure

Citalopram EP Impurity F Oxalate

CAS: 64372-43-6
Formula: C₂₁H₂₃BrFNO₅
MW: 468.3 g/mol

VQ-024995

Reference Standard

Citalopram EP Impurity G chemical structure

Citalopram EP Impurity G

CAS: 1329745-98-3
Formula: C₂₅H₃₃FN₂O₂
MW: 412.5 g/mol

VQ-021170

Reference Standard

Citalopram EP Impurity G (Dihydrobromide salt) chemical structure

Citalopram EP Impurity G (Dihydrobromide salt)

CAS: 2575516-42-4
Formula: C₂₅H₃₅Br₂FN₂O₂
MW: 574.4 g/mol

VQ-044131

Reference Standard

Citalopram Hydrobromide Salt chemical structure

Citalopram Hydrobromide Salt

CAS: 59729-32-7
Formula: C₂₀H₂₂BrFN₂O
MW: 405.3 g/mol

In stock

Reference Standard

Citalopram Hydrochloride Salt chemical structure

Citalopram Hydrochloride Salt

CAS: 85118-27-0
Formula: C₂₀H₂₂ClFN₂O
MW: 360.9 g/mol

VQ-007395

Reference Standard

Citalopram Impurity 33 chemical structure

Citalopram Impurity 33

CAS: 865435-44-5
Formula: C₁₉H₂₁FN₂O₂
MW: 328.4 g/mol

VQ-047808

Reference Standard

Citalopram Impurity A chemical structure

Citalopram Impurity A

CAS: 64372-56-1
Formula: C₂₀H₂₃FN₂O₂
MW: 342.4 g/mol

VQ-004652

Reference Standard

Citalopram oxalate chemical structure

Citalopram oxalate

CAS: 207559-01-1
Formula: C₂₂H₂₃FN₂O₅
MW: 414.4 g/mol

VQ-044369

Reference Standard

Citalopram Related Compound E HCl Salt chemical structure

Citalopram Related Compound E HCl Salt

CAS: 62498-71-9
Formula: C₂₀H₂₂ClFN₂O₂
MW: 376.8 g/mol

VQ-024998

Reference Standard

Citalopram Related Compound II chemical structure

Citalopram Related Compound II

CAS: 488787-59-3
Formula: C₂₀H₂₃FN₂O₂
MW: 342.4 g/mol

In stock

Reference Standard

Citalopram-d4 Hydrobromide chemical structure

Citalopram-d4 Hydrobromide

CAS: 1219803-58-3
Formula: C₂₀H₂₂BrFN₂O
MW: 409.3 g/mol

VQ-036348

Reference Standard

Citalopram-d6 chemical structure

CAS: 1190003-26-9
Formula: C₂₀H₂₁FN₂O
MW: 330.4 g/mol

VQ-036350

Reference Standard

Citalopram-D6 Oxalate chemical structure

Citalopram-D6 Oxalate

CAS: 1246819-94-2
Formula: C₂₂H₂₃FN₂O₅
MW: 420.5 g/mol

VQ-036347

Reference Standard

Citarinostat chemical structure

CAS: 1316215-12-9
Formula: C₂₄H₂₆ClN₅O₃
MW: 467.9 g/mol

VQ-047810

Reference Standard

Citicoline IP Impurity C chemical structure

Citicoline IP Impurity C

CAS: 52448-10-9
Formula: C₁₀H₁₆N₃O₈P
MW: 337.22 g/mol

VQ-022291

Reference Standard

Citicoline IP Impurity D chemical structure

Citicoline IP Impurity D

CAS: 76742-17-1
Formula: C₁₃H₂₁N₄O₈P
MW: 392.3 g/mol

VQ-036351

Reference Standard

Citicoline IP Impurity D (Dicyclohexylcarboxamidine Salt) chemical structure

Citicoline IP Impurity D (Dicyclohexylcarboxamidine Salt)

CAS: 76742-18-2
Formula: C₃₀H₅₂N₇O₉P
MW: 685.7 g/mol

VQ-035264

Reference Standard

Citiolone chemical structure

CAS: 1195-16-0
Formula: C₆H₉NO₂S
MW: 159.21 g/mol

VQ-050070

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