Cyclophosphamide Impurity 19 (CAS 3308-51-8) es una impureza identificada como producto secundario en la síntesis y degradación de ciclofosfamida | relevante para el perfil de impurezas de lotes farmacéuticos. Su presencia puede derivar de rutas de reacción secundarias o condiciones de almacenamiento agresivas. Su identificación y cuantificación se realizan mediante técnicas analíticas avanzadas como HPLC acoplada a detectores UV y LC-MS para confirmación de masa | complementadas con RMN para elucidación estructural. La caracterización incluye evaluación de retención | espectroscopía | estabilidad y límite de aceptación conforme a guías regulatorias aplicables | y su control es crítico para asegurar la calidad del producto final.
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