Impureza Levetiracetam Racemate (CAS 33996-58-6) representa a presença do enantiômero indesejado em lotes onde é esperado o enantiômero único | constituindo uma impureza quiral crítica que afeta pureza e qualidade do substrato. Sua caracterização requer métodos analíticos específicos como HPLC quiral | LC-MS e polarimetria para quantificar excesso enantiomérico e impurezas relacionadas. O controle inclui validação de métodos | limites de especificação alinhados a ICH Q3A | monitoramento durante desenvolvimento e investigação de origem sintética. Estratégias de mitigação abrangem otimização de resolução enantiomérica | purificação cristalina e controles robustos de processo para minimizar contaminação e variação de lote.
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