Naphazoline Impurity 1 (CAS 17518-47-7) es una impureza relacionada estructuralmente con el principio activo que puede originarse por rutas de síntesis incompleta o degradación oxidativa durante el procesado. Su identificación y cuantificación requieren técnicas analíticas de alta resolución como HPLC con detección UV | LC-MS para confirmación de masa y RMN para elucidación estructural. Esta impureza afecta la pureza del lote | la estabilidad y cumple los requisitos de control establecidos en directrices regulatorias como ICH Q3A. Las estrategias de mitigación incluyen optimización de condiciones de reacción | pasos de purificación adicionales y límites de aceptación basados en evaluación toxicológica.
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