Prednisolone-21-ethylcarbonate (CAS 2205-88-1) é uma impureza relacionada do prednicarbato | reconhecida como derivado carbonato do anel 21 da prednisolona. Pode originar-se por reações de esterificação ou por proteção e desproteção durante a síntese e processamento | assim como por degradação sob condições alcoólicas | afetando o perfil de pureza e a estabilidade do produto farmacêutico. A sua presença exige controles analíticos rigorosos | incluindo HPLC com detecção UV | LC-MS para identificação e NMR para confirmação estrutural | além de validação de métodos e definição de limites conforme requisitos regulatórios | com monitoramento de processo e estratégias de purificação para minimizar riscos.
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