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Impurities & Reference Standards

Pharmacopeial Impurities (EP / USP / BP)

578 pharmacopeial impurities (ep / usp / bp) with CAS numbers, structures and specifications — batch COA and GHS SDS supplied.

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COA + SDSwith every lot

Reference Standard

Cisatracurium EP Impurity M chemical structure

Cisatracurium EP Impurity M

CAS: 1193104-84-5
Formula: C₅₄H₇₄N₂O₁₂⁺2
MW: 943.2 g/mol

VQ-035537

Reference Standard

Cisatracurium EP Impurity T

Cisatracurium EP Impurity T

CAS: 96946-51-9
Formula: C₅₃H₇₂N₂O₁₂
MW: 929.15 g/mol

VQ-035846

Reference Standard

Cisatracurium EP Impurity U chemical structure

Cisatracurium EP Impurity U

CAS: 96946-53-1
Formula: C₅₃H₇₂N₂O₁₂⁺2
MW: 929.1 g/mol

VQ-035849

Reference Standard

Cisplatin EP Impurity A chemical structure

Cisplatin EP Impurity A

CAS: 14913-33-8
Formula: Cl₂H₆N₂Pt⁺2
MW: 300.05 g/mol

VQ-024781

Reference Standard

Cisplatin EP Impurity B chemical structure

Cisplatin EP Impurity B

CAS: 17632-41-6
Formula: Cl₃H₃NPt-
MW: 318.5 g/mol

VQ-024783

Reference Standard

Cisplatin EP Impurity B (Potassium Salt) chemical structure

Cisplatin EP Impurity B (Potassium Salt)

CAS: 13820-91-2
Formula: Cl₃H₃KNPt
MW: 357.6 g/mol

VQ-024782

Reference Standard

Cisplatin EP Impurity C chemical structure

Cisplatin EP Impurity C

CAS: 13965-91-8
Formula: Cl₄Pt-2
MW: 336.9 g/mol

VQ-036156

Reference Standard

Citalopram EP Impurity B chemical structure

Citalopram EP Impurity B

CAS: 411221-53-9
Formula: C₂₀H₂₁FN₂O₂
MW: 340.4 g/mol

VQ-021168

Reference Standard

Citalopram EP Impurity B Oxalate chemical structure

Citalopram EP Impurity B Oxalate

CAS: 1332724-03-4
Formula: C₂₂H₂₃FN₂O₆
MW: 430.4 g/mol

VQ-024992

Reference Standard

Citalopram EP Impurity C chemical structure

Citalopram EP Impurity C

CAS: 372941-54-3
Formula: C₂₀H₁₉FN₂O₂
MW: 338.4 g/mol

VQ-022199

Reference Standard

Citalopram EP Impurity C Oxalate chemical structure

Citalopram EP Impurity C Oxalate

CAS: 1440961-11-4
Formula: C₂₂H₂₁FN₂O₆
MW: 428.4 g/mol

VQ-021169

Reference Standard

Citalopram EP Impurity C-HCL

Citalopram EP Impurity C-HCL

CAS: 2469734-61-8
Formula: C₂₀H₂₀ClFN₂O₂
MW: 374.84 g/mol

VQ-036344

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

Cladribine EP Impurity A chemical structure

Cladribine EP Impurity A

CAS: 4546-70-7
Formula: C₁₀H₁₄N₆O₃
MW: 266.26 g/mol

VQ-022209

Reference Standard

Cladribine EP Impurity B chemical structure

Cladribine EP Impurity B

CAS: 24757-70-8
Formula: C₁₁H₁₅N₅O₄
MW: 281.27 g/mol

VQ-022206

Reference Standard

Cladribine EP Impurity D chemical structure

Cladribine EP Impurity D

CAS: 5542-92-7
Formula: C₁₀H₁₂ClN₅O₃
MW: 285.69 g/mol

VQ-022207

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