7′-Methyl-1-nitroso-2′-propyl- 1H | 3’H-2 | 5′- bibenzo(d)imidazole se describe como impureza crítica en el proceso de síntesis | identificable por señales características en HPLC | LC-MS y espectroscopía de RMN. Su presencia suele derivar de reacciones secundarias de nitrosación o del uso de precursores impuros y puede afectar la pureza | el rendimiento y la estabilidad del material final. Se recomienda establecer métodos analíticos validados para cuantificación trazable | definir límites de especificación basados en evaluación de riesgo y realizar estudios de degradación forzada para comprender su formación. Para control se sugieren etapas de purificación adicionales | optimización de condiciones de reacción y pruebas de liberación que garanticen conformidad con criterios de calidad.
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