N-Formyl Ampicilloic Acid es una impureza formilada derivada del análogo ampicilloico que puede generarse durante la síntesis | purificación o almacenamiento del fármaco precursor. Presenta mayor polaridad y acidez por el grupo carboxílico y la formilación | lo que altera el perfil cromatográfico y la solubilidad. Su presencia puede comprometer la pureza y la cuantificación por HPLC-UV | por lo que se recomienda su identificación por LC-MS y confirmación estructural por RMN. Las estrategias de control incluyen optimización de condiciones de reacción | etapas de purificación adicionales | límites especificados en materia prima y métodos validados de estabilidad indicativa para monitorizar su formación y asegurar conformidad analítica.
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