Donepezil Impurity 8 (CAS 1808997-65-0) é uma impureza frequentemente observada como subproduto na síntese ou como produto de degradação do donepezil. A sua identificação e quantificação são críticas para avaliar o impacto sobre a pureza do princípio ativo | a estabilidade e a conformidade regulatória. Métodos analíticos validados como HPLC-UV | LC-MS e RMN permitem quantificação | elucidação estrutural e rastreamento durante o desenvolvimento e o controlo de processo. Estratégias de controlo incluem otimização das etapas sintéticas | purificação por cristalização ou cromatografia e estabelecimento de limites de especificação fundamentados em avaliação toxicológica | fornecendo informação essencial para garantia da qualidade e libertação segura do produto.
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