(3R | 5S)-3-metil-5-(bifenil-4-il)pyrrolidin-2-ona é uma impureza quiral relevante em lotes de síntese | caracterizada pelo núcleo pirrolidinona substituído por um grupo bifenil e um substituinte metila na posição 3. Sua identificação e quantificação são críticas para o perfil de qualidade | uma vez que traços desta impureza podem alterar propriedades fisicoquímicas e atividade farmacológica. Requer técnicas analíticas de alta resolução como HPLC quiral | RMN 1D e 2D e espectrometria de massa para confirmação de estereoquímica e massa exata. Estratégias de controle incluem monitoramento de rota sintética | limites especificados e estudos de estabilidade para garantir conformidade regulatória.
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![(2R,4S)-5-(Biphenyl-4-yl)-4-[(tert-butoxycarbonyl)amino]-2-methylpentanoic Acid](https://veeprho.com/wp-content/uploads/2026/02/2R4S-5-Biphenyl-4-yl-4-tert-butoxycarbonylamino-2-methylpentanoic-Acid-1012341-50-2-VE009680-ac14.png "(2R,4S)-5-(Biphenyl-4-yl)-4-[(tert-butoxycarbonyl)amino]-2-methylpentanoic Acid")