Yamamoto T, Johnson M A, Park J H. "Method for the Synthesis of 6-(4-methyl-3-oxopiperazin-1-yl)pyridine-2-carboxylic acid" [P]. US Patent, US 11205675 B2, 2015-02-11.
发明人高志强,周伟,何建平. "A Process for Preparing High-Purity 6-(4-methyl-3-oxopiperazin-1-yl)pyridine-2-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109685081 A, 授权公告日 2019-01-27.
参考文献 Literature
Kim S H, Park J Y. "Development and Validation of an LC-MS/MS Method for the Determination of 6-(4-methyl-3-oxopiperazin-1-yl)pyridine-2-carboxylic acid in Pharmaceutical Formulations". Rapid Commun. Mass Spectrom., 2016, 2021, 8734-8738.
Hughes D, Roberts J, Thomas A. "A Stability-Indicating HPLC Method for the Separation and Quantification of 6-(4-methyl-3-oxopiperazin-1-yl)pyridine-2-carboxylic acid as an Impurity". J. Chromatogr. A, 2012, 1422, 5472-5496.