A impureza (3S | 4S)-N-Methyl Paroxetine | também conhecida como Paroxetine Impurity 1 | é um contaminante quiral relevante formado durante etapas de N-metilação e reação de fechamento de anel na síntese de paroxetina. Sua presença requer monitoramento rigoroso por HPLC com detecção UV e confirmação por LC-MS e RMN para determinação de estrutura e pureza enantiomérica. A quantificação e o estabelecimento de limites aceitáveis seguem orientações regulatórias | incluindo avaliação de impurezas genotóxicas e avaliação de estabilidade sob condições de estresse. Fornecemos material de referência | documentação analítica e métodos validados para suporte ao controle de qualidade e caracterização.
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