Bromfenac Nitroso Impurity 1 é uma impureza nitrosada associada ao processo sintético ou à degradação do bromfenac | caracterizada por potencial genotóxico e por impactar o perfil de segurança do lote. A sua identificação e quantificação exigem técnicas cromatográficas e espectrométricas sensíveis | por exemplo HPLC unido a LC-MS | além de confirmação por RMN quando necessário. Estratégias de controlo incluem otimização da rota sintética | eliminação de agentes nitrosantes | validação de métodos analíticos e estabelecimento de limites segundo ICH M7 e ICH Q3A orientações de impurezas. Monitorização de estabilidade e estudos de purge são críticos para assegurar conformidade em liberação e especificações.
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