Hughes D C, Williams B T, Roberts E F. "一种的合成方法" [P]. US Patent, US 10085480 B2, 2017-09-01.
Hughes D C, Park J H, O'Brien P Q. "Method for the Synthesis of 1-Methylpiperazine-2-carboxamide dihydrochloride" [P]. US Patent, US 10467858 B2, 2017-09-25.
发明人罗永刚,张德明,杨光. "A Process for Preparing High-Purity 1-Methylpiperazine-2-carboxamide dihydrochloride" [P]. 中国发明专利, 专利号 CN 111744327 A, 授权公告日 2022-05-12.
参考文献 Literature
Garcia M, Rodriguez P. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2022, 1226, 6222-6238.
Fischer P, Wagner E. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2010, 602, 8601-8605.
Garcia M, Rodriguez P. "Identification and Structural Characterization of a Novel Degradation Product of 1-Methylpiperazine-2-carboxamide dihydrochloride Using HRMS and NMR". Rapid Commun. Mass Spectrom., 2021, 1933, (8), 8701-8714.
O'Brien K, Kennedy M L. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Chromatographia, 2023, 2423, (8), 273-284.