Ibuprofen Methyl Ester (CAS 61566-34-5) é uma impureza observada em processos de síntese e purificação de ibuprofeno | resultante de esterificação ou metilação secundária. Como derivado metílico do ácido 2-(4-isobutilfenil)propiónico | afeta o perfil de impurezas | estabilidade e pureza farmacêutica do material de partida. A detecção e quantificação dependem de métodos cromatográficos validados como HPLC com detecção UV | GC-MS e LC-MS para estabelecimento de limites e estudos de degradação forçada. O controle inclui especificação analítica | limites de aceitação compatíveis com diretrizes ICH | investigação de processo e estratégias de purificação para minimizar risco toxicológico e desvio de qualidade do lote.
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