Levetiracetam Impurity 9 | CAS 664304-29-4 | es una impureza relacionada estructuralmente con el principio activo que requiere control riguroso durante síntesis y purificación. Su identificación y cuantificación se realizan típicamente por HPLC con detección UV y LC-MS para confirmación de masa exacta. Presenta propiedades fisicoquímicas que pueden afectar pureza | rendimiento y estabilidad del lote final del API; por ello su perfil de degradación y formación se evalúa en estudios de proceso y estabilidad. Se recomiendan límites especificados en especificaciones analíticas y estrategias de mitigación como optimización de condiciones de reacción y purificación por cromatografía preparativa.
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