La impureza 5-(4′-(azidomethyl)-[1 | 1′-biphenyl]-2-yl)-1-trityl-1H-tetrazole (CAS 124806-66-2) es un subproducto lipofílico que combina un grupo azida | un anillo tetrazólico y una protección por grupo trityl sobre un bifenilo | lo que modifica perfiles cromatográficos y solubilidad. Su aparición suele deberse a azidaciones incompletas o a condiciones de protección y desprotección subóptimas durante la síntesis | y puede mostrar sensibilidad térmica y riesgo de descomposición. La identificación se realiza mediante HPLC-UV | LC-MS y RMN 1H/13C | y su control exige optimización de etapas de purificación y límites de especificación en estudios de estabilidad.
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