5-((4-nitrosopiperazin-1-yl)methyl)pyridin-2-amine é uma impureza nitrosada relevante em processos de síntese que contém um grupo nitroso associado a potenciais riscos genotóxicos, exigindo controle analítico e de processo. Do ponto de vista estrutural e fisicoquímico a molécula é polar, básica e favorece ionização, o que facilita detecção por LC-MS/MS e HRMS; HPLC-UV com condições de aquecimento cuidadoso e NMR são úteis para caracterização estrutural. Estratégias de mitigação incluem evitar nitrosação, controlar pH e agentes nitrosantes, uso de agentes redutores ou sequestrantes e armazenamento sob atmosfera inerte e proteção contra luz e calor. Conformidade com ICH M7 e guidelines regulatórias é recomendada.
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