QNMR, D2O Exchange, 13C NMR, 13C APT, COSY NMR, NOESY NMR, 15N NMR, HSQC NMR, HMQC NMR, and HMBC NMR. These are available upon request and may be free or subject to additional charges.
Descripción
4-Nitrosometilaminopiridina (NMAP), CAS 16219-99-1, es una impureza de tipo nitrosamina piridínica con fórmula molecular C6H7N3O y peso molecular de 137,14 g/mol. Como aminopiridina N-nitrosada, pertenece a una clase estructural asociada con reactividad electrofílica y preocupación genotóxica, coherente con el comportamiento regulatorio de las nitrosaminas. Su formación puede derivarse de la nitrosación de precursores aminados durante la síntesis o el almacenamiento en presencia de agentes nitrosantes. La evaluación se enmarca habitualmente en ICH M7 para impurezas reactivas con el ADN. Su cuantificación en niveles traza suele requerir LC-MS/MS, GC-MS o espectrometría de masas de alta resolución.
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