Impureza (S)-Methyl 2-(2-oxopyrrolidin-1-yl)butanoate (CAS 358629-51-3) | também referida como (2S)-2-(2-oxopyrrolidin-1-yl)butanoic acid methyl ester | é um subproduto quiral recorrente em rotas sintéticas de ésteres aminados. Apresenta um centro estereogênico S | função éster e núcleo lactama suscetíveis a hidrólise e epimerização | o que pode comprometer a pureza enantiomérica e a estabilidade do lote. A sua identificação requer HPLC analítico e quiral | LC-MS para confirmação de massa e RMN para atribuição estrutural. Estudos de estabilidade | limites de especificação e avaliação toxicológica são essenciais para gestão de risco e conformidade regulatória.
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