Impurity Reference Standards

Nitrosamine Impurities

N-nitrosamine reference standards, including small nitrosamines and nitrosamine drug substance related impurities, for trace LC-MS risk testing.

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N-Nitroso Metoprolol

CAS: 138768-62-4
Formula: C₁₅H₂₄N₂O₄
MW: 296.36 g/mol

ZX-006138

N-Nitroso Mirabegron

CAS: 3017159-61-1
Formula: C₂₁H₂₃N₅O₃S
MW: 425.5 g/mol

ZX-006139

N-Nitroso Moexipril

CAS: 1026879-47-9
Formula: C₂₇H₃₃N₃O₈
MW: 527.6 g/mol

ZX-022194

N-Nitroso N-Desethyl Alverine

CAS: 871884-77-4
Formula: C₁₈H₂₂N₂O
MW: 282.4 g/mol

ZX-027826

N-Nitroso N-Desethyl Oxybutynin Impurity (N-1)

CAS: 127755-21-9
Formula: C₁₈H₂₁ClO₃
MW: 320.8 g/mol

ZX-006140

N-Nitroso N-Desethyl Oxybutynin Impurity (N-2)

CAS: 80976-67-6
Formula: C₂₀H₂₇NO₃
MW: 329.4 g/mol

ZX-006141

N-Nitroso N-Desmethyl Neratinib

CAS: 3050754-68-9
Formula: C₂₉H₂₆ClN₇O₄
MW: 572 g/mol

ZX-006142

N-Nitroso N-Desmethyl Prochlorperazine

CAS: 109095-35-4
Formula: C₁₉H₂₁ClN₄OS
MW: 388.9 g/mol

ZX-022578

N-Nitroso N-Methyl Trifluoro Ethyl Impurity

CAS: 819-35-2
Formula: C₃H₅F₃N₂O
MW: 142.08 g/mol

ZX-046270

N-Nitroso Naphazoline

CAS: 2703749-87-3
Formula: C₁₄H₁₃N₃O
MW: 239.27 g/mol

ZX-030766

N-Nitroso Nebivolol (Mixture of Diastereomers)

CAS: 1391051-68-5
Formula: C₂₂H₂₄F₂N₂O₅
MW: 434.4 g/mol

ZX-022242

N-Nitroso Nilotinib

CAS: 2925306-68-7
Formula: C₂₈H₂₁F₃N₈O₂
MW: 558.5 g/mol

ZX-025836

N-Nitroso Norfloxacin

CAS: 74011-53-3
Formula: C₁₆H₁₇FN₄O₄
MW: 348.33 g/mol

ZX-022323

N-Nitroso Nortropine

CAS: 2659259-66-0
Formula: C₇H₁₂N₂O₂
MW: 156.18 g/mol

ZX-019918

N-Nitroso Paliperidone

CAS: 2416230-38-9
Formula: C₁₂H₁₂FN₃O₂
MW: 249.24 g/mol

ZX-006143

N-Nitroso Paroxetine

CAS: 2361294-43-9
Formula: C₁₉H₁₉FN₂O₄
MW: 358.4 g/mol

ZX-020362

N-Nitroso Perindopril

CAS: 3036581-82-2
Formula: C₁₉H₃₁N₃O₆
MW: 397.5 g/mol

ZX-006144

N-Nitroso Phenylephrine

CAS: 78658-64-7
Formula: C₉H₁₂N₂O₃
MW: 196.2 g/mol

ZX-022713

N-Nitroso Pirfenidone EP Impurity A

CAS: 126209-21-0
Formula: C₆H₇N₃O
MW: 137.14 g/mol

ZX-031800

N-Nitroso Pirfenidone EP Impurity B

CAS: 2512237-43-1
Formula: C₆H₆N₂O₂
MW: 138.12 g/mol

ZX-026360

N-Nitroso Pramipexole

CAS: 3028194-78-4
Formula: C₁₀H₁₆N₄OS
MW: 240.33 g/mol

ZX-006145

N-Nitroso Prilocaine

CAS: 211490-46-9
Formula: C₁₃H₁₉N₃O₂
MW: 249.31 g/mol

ZX-022572

N-Nitroso Propranolol

CAS: 84418-35-9
Formula: C₁₆H₂₀N₂O₃
MW: 288.34 g/mol

ZX-006146

N-Nitroso Pyrantel Pamoate Impurity (stage-I)

CAS: 1449108-86-4
Formula: C₁₆H₂₄N₂O₃S
MW: 324.4 g/mol

ZX-006147

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