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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

20,060 products · page 382 of 836

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Desloratadine N-Carboxylic Acid Methyl Ester Impurity

CAS: 165740-03-4
Formula: C₂₁H₂₁ClN₂O₂
MW: 368.9 g/mol

ZX-004608

Desloratadine N-Formyl Impurity

CAS: 117810-61-4
Formula: C₂₀H₁₉ClN₂O
MW: 338.8 g/mol

ZX-024220

Desloratadine N-Hydroxy Impurity

CAS: 1193725-73-3
Formula: C₁₉H₁₉ClN₂O
MW: 326.8 g/mol

ZX-024221

Desloratadine N-Oxide

CAS: 169253-26-3
Formula: C₁₉H₁₉ClN₂O
MW: 326.8 g/mol

ZX-021358

Desloratadine-d4

CAS: 381727-29-3
Formula: C₁₉H₁₉ClN₂
MW: 314.8 g/mol

ZX-024229

Desloratidine EP Impurity B Hydrochloride

CAS: 432543-89-0
Formula: C₁₉H₁₉ClN₂
MW: 310.8 g/mol

ZX-033287

Desmethoxy Apixaban

CAS: 1801881-17-3
Formula: C₂₄H₂₃N₅O₃
MW: 429.5 g/mol

ZX-004609

Desmethoxy Bedaquiline

CAS: 2924118-10-3
Formula: C₃₁H₂₉BrN₂O₂
MW: 541.5 g/mol

ZX-023503

Desmethoxy Curcumin

CAS: 24939-17-1
Formula: C₂₀H₁₈O₅
MW: 338.4 g/mol

ZX-033244

Desmethoxy Keto Esomeprazole

CAS: 2362529-32-4
Formula: C₁₆H₁₇N₃O₃S
MW: 331.4 g/mol

ZX-024575

Desmethoxy Ranolazine

CAS: 755711-09-2
Formula: C₂₃H₃₁N₃O₃
MW: 397.5 g/mol

ZX-004610

Desmethyl Alogliptin

CAS: 865758-98-1
Formula: C₁₇H₁₉N₅O₂
MW: 325.4 g/mol

ZX-020559

Desmethyl Atomoxetine Hydrochloride

CAS: 881995-46-6
Formula: C₁₆H₂₀ClNO
MW: 277.79 g/mol

ZX-020696

Desmethyl Bosentan

CAS: 253688-61-8
Formula: C₂₆H₂₇N₅O₆S
MW: 537.6 g/mol

ZX-020032

Desmethyl Buflomedil Hydrochloride

CAS: 70585-57-8
Formula: C₁₆H₂₄ClNO₄
MW: 329.82 g/mol

ZX-044552

Desmethyl Butenafine Hydrochloride

CAS: 101828-08-4
Formula: C₂₂H₂₆ClN
MW: 339.9 g/mol

ZX-028391

Desmethyl Carbodenafil

CAS: 147676-79-7
Formula: C₂₃H₃₀N₆O₃
MW: 438.5 g/mol

ZX-032471

Desmethyl Cariprazine

CAS: 839712-15-1
Formula: C₂₀H₃₀Cl₂N₄O
MW: 413.4 g/mol

ZX-020128

Desmethyl Carvedilol

CAS: 72956-44-6
Formula: C₂₃H₂₄N₂O₄
MW: 392.4 g/mol

ZX-021077

Desmethyl Ceftaroline Fosamil

CAS: 1286218-72-1
Formula: C₂₁H₁₉N₈O₈PS₄
MW: 670.7 g/mol

ZX-021137

Desmethyl Celecoxib

CAS: 170569-87-6
Formula: C₁₆H₁₂F₃N₃O₂S
MW: 367.3 g/mol

ZX-023085

Desmethyl Chlorpheniramine Maleate Salt

CAS: 22630-25-7
Formula: C₁₉H₂₁ClN₂O₄
MW: 376.8 g/mol

ZX-021182

Desmethyl Citalopram Hydrobromide

CAS: 1188264-72-3
Formula: C₁₉H₂₀BrFN₂O
MW: 391.3 g/mol

ZX-023967

Desmethyl Dabrafenib

CAS: 1195765-47-9
Formula: C₂₂H₁₈F₃N₅O₂S₂
MW: 505.5 g/mol

ZX-021327

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