QNMR, D2O Exchange, 13C NMR, 13C APT, COSY NMR, NOESY NMR, 15N NMR, HSQC NMR, HMQC NMR, and HMBC NMR. These are available upon request and may be free or subject to additional charges.
Descrição
Impureza Rosuvastatin (3R | 5R)-Isomer t-Butyl Ester (CAS 2162136-65-2) é um subproduto isomérico formado durante etapas de esterificação e desproteção | relevante para o perfil de qualidade do rosuvastatina. Apresenta propriedades físico-químicas e polaridade próximas ao princípio ativo | exigindo métodos analíticos sensíveis como HPLC com detecção UV ou MS para quantificação e separação adequadas. Deve ser monitorada por limites em especificação e controlada por otimização de síntese | purificação e condições de armazenamento para minimizar conversão e formação por degradação. Estudos de estabilidade | validação de método e estratégias de redução de impurezas são essenciais para conformidade regulatória e garantia de segurança.
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