Schröder R, O'Brien P Q, Chen K W. "一种的合成方法" [P]. US Patent, US 11479958 B2, 2025-12-27.
发明人李文辉,郭海燕,林芳. "Method for the Synthesis of Ethyl 5-amino-3-thioxo-2,3-dihydro-1H-pyrazole-4-carboxylate" [P]. 中国发明专利, 专利号 CN 111520573 B, 授权公告日 2016-05-14.
发明人冯建国,陈志强,周伟. "A Process for Preparing High-Purity Ethyl 5-amino-3-thioxo-2,3-dihydro-1H-pyrazole-4-carboxylate" [P]. 中国发明专利, 专利号 CN 111500852 B, 授权公告日 2020-10-05.
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". Phytochemistry, 2014, 1669, (7), 3562-3567.
Wang L, Li J, Zhang H. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2016, 724, (9), 2522-2533.
Kowalski T, Nowak Z. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 5-amino-3-thioxo-2,3-dihydro-1H-pyrazole-4-carboxylate Using HRMS and NMR". Sci. Total Environ., 2022, 86, 921-944.