N-Nitroso Methyl-Nitroguanidine (CAS 70-25-7) | também referida como N-Methyl-N-nitroso-N’-nitroguanidine ou 1-Methyl-3-nitro-1-nitroso-guanidine | é uma impureza nitrosada relevante em processos que envolvem guanidinas metiladas. Forma-se por nitrosação em presença de fontes de nitrito e condições ácidas | exige monitorização rigorosa devido ao perfil de reatividade e potencial de risco toxicológico. Métodos analíticos robustos incluem LC-MS/MS para quantificação de traço | HPLC-UV para triagem e NMR para confirmação estrutural. A estabilidade é reduzida sob luz | calor e ácido | pelo que controles de processo | limites especificados e condições de armazenamento inertizadas são recomendados para minimizar acumulação.
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