Delta-2-Avermectin B1a (CAS 110415-68-4) é uma impureza estruturalmente relacionada à avermectina B1a | identificada em processos de síntese e degradação. Caracteriza-se por uma dupla insaturação adicional no núcleo macrocíclico que altera seu perfil cromatográfico e espectral | exigindo método analítico robusto como HPLC com detecção UV | LC-MS/MS para confirmação de massa e NMR para elucidação estrutural. Sua presença em lotes influencia especificações de pureza | estabilidade e pode indicar vias de degradação ou reações secundárias. Controle e quantificação precisos são essenciais para cumprimento regulatório | definição de limites aceitáveis e investigação de causas raiz em desenvolvimento e fabricação.
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