布地奈德EP杂质H(差向异构体混合物)(Budesonide EP Impurity H (Mixture of Epimer))是药物分析与质量控制领域常用的药物杂质对照品,CAS 号 313474-58-7。分子式 C25H32O5,分子量 412.52。纯度 >95%。CATO 佳途拥有 130,000+ 标准品现货目录,可一站式满足配套采购需求。
Kumar R, Roberts E F, Yamamoto T. "一种布地奈德EP杂质H(差向异构体混合物)的合成方法" [P]. US Patent, US 11141176 B2, 2020-10-06.
发明人徐明华,张德明,杨光. "Method for the Synthesis of Budesonide EP Impurity H (Mixture of Epimer)" [P]. 中国发明专利, 专利号 CN 110714420 A, 授权公告日 2015-12-12.
Chen K W, Park J H, Fischer A B. "A Process for Preparing High-Purity Budesonide EP Impurity H (Mixture of Epimer)" [P]. US Patent, US 11892309 B2, 2025-06-15.
参考文献 Literature
Kowalski T, Nowak Z. "Development and Validation of an LC-MS/MS Method for the Determination of 布地奈德EP杂质H(差向异构体混合物) in Pharmaceutical Formulations". Phytochemistry, 2017, 1154, 8930-8949.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of 布地奈德EP杂质H(差向异构体混合物) as an Impurity". J. Pharm. Biomed. Anal., 2013, 2309, (10), 1882-1891.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of Budesonide EP Impurity H (Mixture of Epimer) Using HRMS and NMR". J. Chromatogr. A, 2025, 296, (5), 7172-7177.