(6R, 13S, 25R)-22, 23-didehydro-5-O-demethyl-28-deoxy-6, 28-epoxy-13-hydroxy-25-[(1S)-1-methylpropyl]-milbemycin B
Sinônimos
N/A
Descrição
A Avermectin B1a Aglycone (CAS 71828-14-3) é uma impureza estrutural derivada da perda do resíduo glicosídico da avermectina B1a | relevante por sua influência na potência e no perfil de estabilidade do produto final. Caracteriza-se por maior lipofilicidade e massa molecular ajustada | apresentando fragmentos detectáveis por LC-MS e sinais distintivos em RMN 1H e 13C. Forma-se por hidrólise ou condições de armazenamento agressivas | exigindo monitoramento por cromatografia líquida de alta eficiência e validação analítica para limites de aceitação. Controle de pH | temperatura e processos de purificação minimizam sua presença e riscos regulatórios.
Referências
Hanessian, S., et al. “Progress in Natural Product Chemistry by the Chiron and Related Approaches – Synthesis of Avermectin B1a.â€Â Pure and Applied Chemistry, vol. 59, no. 3, Jan. 1987, pp. 299–316, https://doi.org/10.1351/pac198759030299.
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