发明人黄志刚,张德明,周伟. "一种尼卡地平杂质52的合成方法" [P]. 中国发明专利, 专利号 CN 114636604 A, 授权公告日 2021-07-23.
发明人黄志刚,胡光,韩伟. "Method for the Synthesis of Nicardipine Impurity 52" [P]. 中国发明专利, 专利号 CN 113184016 B, 授权公告日 2024-07-25.
Hughes D C, Brown S R, Klinger H. "A Process for Preparing High-Purity Nicardipine Impurity 52" [P]. US Patent, US 10151074 B2, 2023-03-04.
参考文献 Literature
Wang L, Li J, Zhang H. "Development and Validation of an LC-MS/MS Method for the Determination of 尼卡地平杂质52 in Pharmaceutical Formulations". Anal. Chim. Acta, 2012, 1827, 9996-10012.
Smith J A, Johnson M B. "A Stability-Indicating HPLC Method for the Separation and Quantification of 尼卡地平杂质52 as an Impurity". J. Sep. Sci., 2013, 383, (8), 1779-1799.
Zhang Y, Li Q, Chen T. "Identification and Structural Characterization of a Novel Degradation Product of Nicardipine Impurity 52 Using HRMS and NMR". Environ. Sci. Technol., 2011, 2440, (7), 4331-4358.
Smith J A, Johnson M B. "Forced Degradation Studies to Evaluate 尼卡地平杂质52 Profile in Drug Substances According to ICH Guidelines". Anal. Chem., 2016, 983, (5), 2988-2994.