Catalog division

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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Isotretinoin-d5

CAS: 78996-15-3
Formula: C₂₀H₂₈O₂
MW: 305.5 g/mol

ZX-030036

Isovaleric Acid D9

CAS: 344298-81-3
Formula: C₅H₁₀O₂
MW: 111.19 g/mol

ZX-035901

Isovitexin

CAS: 38953-85-4
Formula: C₂₁H₂₀O₁₀
MW: 432.4 g/mol

ZX-031427

Isoxepac

CAS: 55453-87-7
Formula: C₁₆H₁₂O₄
MW: 268.26 g/mol

ZX-022354

Isoxsuprine Hydrochloride

CAS: 579-56-6
Formula: C₁₈H₂₄ClNO₃
MW: 337.8 g/mol

ZX-030037

Isradipine

CAS: 75695-93-1
Formula: C₁₉H₂₁N₃O₅
MW: 371.4 g/mol

ZX-021907

Isradipine EP Impurity A

CAS: 75695-99-7
Formula: C₁₈H₁₉N₃O₅
MW: 357.4 g/mol

ZX-030038

Isradipine EP Impurity B

CAS: 1352916-15-4
Formula: C₂₁H₂₅N₃O₅
MW: 399.4 g/mol

ZX-030039

Isradipine EP Impurity D

CAS: 116169-18-7
Formula: C₁₉H₁₉N₃O₅
MW: 369.4 g/mol

ZX-030040

Istradefylline

CAS: 155270-99-8
Formula: C₂₀H₂₄N₄O₄
MW: 384.4 g/mol

ZX-025189

Itopride

CAS: 122898-67-3
Formula: C₂₀H₂₆N₂O₄
MW: 358.4 g/mol

ZX-025190

Itopride Impurity 12

CAS: 20059-73-8
Formula: C₁₁H₁₈N₂O
MW: 194.27 g/mol

ZX-004837

Itopride N-Oxide

CAS: 141996-98-7
Formula: C₂₀H₂₆N₂O₅
MW: 374.4 g/mol

ZX-025191

Itraconazole

CAS: 84625-61-6
Formula: C₃₅H₃₈Cl₂N₈O₄
MW: 705.6 g/mol

ZX-006583

Itraconazole 2-Oxo Metabolite

CAS: 112560-33-5
Formula: C₃₅H₃₆Cl₂N₈O₅
MW: 719.6 g/mol

ZX-030052

Itraconazole Desethylene-seco-piperazine Di-N-formyl Impurity

CAS: 1199350-02-1
Formula: C₃₅H₃₆Cl₂N₈O₆
MW: 735.6 g/mol

ZX-030048

Itraconazole EP Impurity A

CAS: 252964-68-4
Formula: C₂₃H₂₉N₅O₂
MW: 407.5 g/mol

ZX-025192

Itraconazole EP Impurity B

CAS: 854372-77-3
Formula: C₃₅H₃₈Cl₂N₈O₄
MW: 705.6 g/mol

ZX-025193

Itraconazole EP Impurity C

CAS: 74855-91-7
Formula: C₃₄H₃₆Cl₂N₈O₄
MW: 691.6 g/mol

ZX-021912

Itraconazole EP Impurity D

CAS: 89848-49-7
Formula: C₃₄H₃₆Cl₂N₈O₄
MW: 691.6 g/mol

ZX-021913

Itraconazole EP Impurity E

CAS: 252964-65-1
Formula: C₃₅H₃₈Cl₂N₈O₄
MW: 705.6 g/mol

ZX-025194

Itraconazole EP Impurity F

CAS: 89848-51-1
Formula: C₃₅H₃₈Cl₂N₈O₄
MW: 705.6 g/mol

ZX-025195

Itraconazole Hydroxy Isobutyltriazolone Impurity

CAS: 106461-41-0
Formula: C₂₂H₂₇N₅O₂
MW: 393.5 g/mol

ZX-025196

Itraconazole Impurity 28

CAS: 103661-14-9
Formula: C₁₄H₁₅Cl₂N₃O₅S
MW: 408.3 g/mol

ZX-033646

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