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Impurity Reference Standards

Pharmacopoeial impurities, nitrosamines, metabolites, labelled internal standards and API working standards, each backed by analytical data for method development and QC.

20,060 products6 categories2,050 in stockCOA + SDS with every lot

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Vardenafil Dihydrochloride Salt

CAS: 224789-15-5
Formula: C₂₃H₃₄Cl₂N₆O₄S
MW: 561.5 g/mol

ZX-032739

Vardenafil EP Impurity A

CAS: 2169247-39-4
Formula: C₂₁H₂₈N₆O₄S
MW: 460.6 g/mol

ZX-022996

Vardenafil EP Impurity B

CAS: 437717-43-6
Formula: C₁₇H₂₀N₄O₅S
MW: 392.4 g/mol

ZX-027520

Vardenafil EP Impurity C

CAS: 1255919-03-9
Formula: C₃₈H₄₆N₁₀O₈S₂
MW: 835 g/mol

ZX-022997

Vardenafil Hydrochloride

CAS: 224785-91-5
Formula: C₂₃H₃₃ClN₆O₄S
MW: 525.1 g/mol

ZX-032958

Vardenafil Hydrochloride Trihydrate

CAS: 330808-88-3
Formula: C₂₃H₃₉ClN₆O₇S
MW: 579.1 g/mol

ZX-027518

Vardenafil Impurity 1

CAS: 1417529-67-9
Formula: C₁₇H₁₈N₄O₄
MW: 342.35 g/mol

ZX-027519

Vardenafil Impurity 2

CAS: 1417529-69-1
Formula: C₂₃H₃₀N₆O₆S
MW: 518.6 g/mol

ZX-027521

Vardenafil N-Oxide

CAS: 448184-48-3
Formula: C₂₃H₃₂N₆O₅S
MW: 504.6 g/mol

ZX-022995

Varenicline

CAS: 249296-44-4
Formula: C₁₃H₁₃N₃
MW: 211.26 g/mol

ZX-006897

Varenicline Amine Impurity

CAS: 230615-56-2
Formula: C₁₃H₁₃F₃N₂O
MW: 270.25 g/mol

ZX-005492

Varenicline Di N-Oxide Hydrochloride Impurity

CAS: 1337563-47-9
Formula: C₁₃H₁₃N₃O₂
MW: 243.26 g/mol

ZX-006358

Varenicline Di N-Oxide Impurity

CAS: 1337563-47-9
Formula: C₁₃H₁₃N₃O₂
MW: 243.26 g/mol

ZX-006359

Varenicline Diamine Impurity

CAS: 230615-69-7
Formula: C₁₃H₁₄F₃N₃O
MW: 285.26 g/mol

ZX-005493

Varenicline Hydroxy Impurity

CAS: 357424-21-6
Formula: C₁₃H₁₃N₃O
MW: 227.26 g/mol

ZX-005494

Varenicline Imidazole Impurity

CAS: 2759288-58-7
Formula: C₁₄H₁₂F₃N₃O
MW: 295.26 g/mol

ZX-005495

Varenicline Impurity 3 (Freebase)

CAS: 357424-12-5
Formula: C₁₂H₁₃N₃
MW: 199.25 g/mol

ZX-005496

Varenicline Impurity 3 (Hydrochloride)

CAS: 230615-10-8
Formula: C₁₂H₁₄ClN₃
MW: 235.71 g/mol

ZX-005497

Varenicline Impurity F

CAS: 357426-10-9
Formula: C₁₅H₁₂F₃N₃O₂
MW: 323.27 g/mol

ZX-005498

Varenicline Metadinitro

CAS: 853946-18-6
Formula: C₁₃H₁₀F₃N₃O₅
MW: 345.23 g/mol

ZX-027523

Varenicline Mono N-Oxide Hydrochloride Impurity

CAS: 2306217-12-7
Formula: C₁₃H₁₃N₃O
MW: 227.26 g/mol

ZX-006360

Varenicline Mono N-Oxide Impurity

CAS: 2306217-12-7
Formula: C₁₃H₁₃N₃O
MW: 227.26 g/mol

ZX-006361

Varenicline Mono Nitro Amine Impurity

CAS: 950781-89-2
Formula: C₁₃H₁₂F₃N₃O₃
MW: 315.25 g/mol

ZX-005499

Varenicline N-Formyl Impurity

CAS: 796865-82-2
Formula: C₁₄H₁₃N₃O
MW: 239.27 g/mol

ZX-005500

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