Naphazoline EP Impurity A (HCl Salt) | CAS 73664-32-1 | es una impureza derivada de la estructura 1-naphthaleneacetamide N-(2-aminoethyl)- en su forma monohidrocloruro; presenta un núcleo naftalénico acetamídico con una cadena etilenamínica que afecta el perfil químico y cromatográfico del material. Su identificación y cuantificación son críticas en control de calidad | empleando HPLC con detección UV y confirmación por LC-MS y RMN para la determinación de masa y estructura. Se comporta como sal hidrosoluble y debe considerarse en estudios de estabilidad | límites de especificación y estrategias de purificación durante la fabricación conforme a la Farmacopea Europea.
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