Chen K W, Hughes D C, O'Brien P Q. "一种的合成方法" [P]. US Patent, US 10390514 B2, 2020-10-26.
Brown S R, Stevens L M, Mueller T. "Method for the Synthesis of 4-Amino-1-methylpyrazolidin-3-one" [P]. US Patent, US 9222377 B2, 2023-04-03.
发明人黄志刚,郭海燕,赵玉洁. "A Process for Preparing High-Purity 4-Amino-1-methylpyrazolidin-3-one" [P]. 中国发明专利, 专利号 CN 112228987 B, 授权公告日 2018-03-10.
参考文献 Literature
Zhang Y, Li Q, Chen T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chim. Acta, 2023, 735, (9), 6060-6078.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2012, 2458, (1), 1188-1214.
Kumar A, Sharma P, Patel R S. "Identification and Structural Characterization of a Novel Degradation Product of 4-Amino-1-methylpyrazolidin-3-one Using HRMS and NMR". Phytochemistry, 2017, 1452, 7565-7573.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Environ. Sci. Technol., 2013, 725, 512-522.