Clonidine Impurity II (CAS 21709-18-2) | também referida como 2 | 6 dichlorophenyl carbonimidic dichloride | é uma impureza crítica observada em lotes de cloridrato de clonidina que requer monitoramento por perfil de impurezas. Caracteriza-se por propriedades fisicoquímicas detectáveis por HPLC | LC-MS e RMN e pode afetar pureza | rendimento e estabilidade do API se não controlada. A identificação estruturada | quantificação limite e estabelecimento de especificações são essenciais para controle de qualidade e conformidade regulatória. Estratégias de mitigação incluem otimização de síntese | purificação cromatográfica e estudos de degradação forçados para compreensão de vias de formação e critérios de aceitação.
Referências
Lowenthal, D. T., et al. “Clinical Pharmacokinetics of Clonidine.†Clinical Pharmacokinetics, vol. 14, no. 5, May 1988, pp. 287–310, https://doi.org/10.2165/00003088-198814050-00002. ?
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