发明人张德明,刘建华,韩伟. "Method for the Synthesis of Nifedipine impurity 39" [P]. 中国发明专利, 专利号 CN 108234380 A, 授权公告日 2024-06-24.
发明人孙丽萍,林芳,黄志刚. "A Process for Preparing High-Purity Nifedipine impurity 39" [P]. 中国发明专利, 专利号 CN 115363078 A, 授权公告日 2023-10-28.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of 硝苯地平杂质39 in Pharmaceutical Formulations". Talanta, 2023, 603, (9), 2255-2263.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of 硝苯地平杂质39 as an Impurity". Food Chem., 2025, 1111, 3781-3790.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of Nifedipine impurity 39 Using HRMS and NMR". Environ. Sci. Technol., 2015, 1378, (9), 6525-6531.