Levetiracetam Related Compound A (CAS 102767-31-7) | identificado como (2S)-2-(4-chlorobutanoylamino)butanamide | es una impureza relevante en la síntesis de levetiracetam. Su estructura amida con cadena clorada le confiere polaridad moderada y puntos de retención característicos en HPLC | y es detectable por LC-MS y RMN para identificación y cuantificación. Esta impureza puede generarse por cloración incompleta o reacciones secundarias durante etapas de acilación y requiere límites especificados conforme a ICH Q3A para garantizar calidad del principio activo. Estrategias de control incluyen optimización de parámetros sintéticos | etapas de purificación adicionales y métodos analíticos validados para monitorizar trazas en materia prima y lotes finales.
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