Levetiracetam Related Compound A (CAS 102767-31-7) | identificado como (2S)-2-(4-chlorobutanoylamino)butanamide | é uma impureza clorada estruturalmente relacionada ao levetiracetam que exige monitoramento rigoroso em controle de qualidade. Sua configuração 2S e os grupos funcionais amida e haleto de alquila conferem polaridade moderada e reatividade potencial durante etapas de síntese e purificação. Pode formar-se por acilação incompleta ou pela presença de reagentes clorados | sendo detectável por HPLC | LC-MS e RMN para quantificação e caracterização de traços. O perfil de estabilidade e solubilidade influencia protocolos de remoção e limites de especificação | requerendo investigação analítica e validação de métodos para mitigação de risco.
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