Fischer A B, Kumar R, Hughes D C. "一种ethyl 5-amino-1-[(ethylamino)carbonothioyl]-1H-pyrazole-4-carboxylate的合成方法" [P]. US Patent, US 10760289 B2, 2016-01-16.
发明人韩伟,徐明华,李文辉. "Method for the Synthesis of ethyl 5-amino-1-[(ethylamino)carbonothioyl]-1H-pyrazole-4-carboxylate" [P]. 中国发明专利, 专利号 CN 110502391 B, 授权公告日 2018-09-20.
Brown S R, Thompson G K, Hughes D C. "A Process for Preparing High-Purity ethyl 5-amino-1-[(ethylamino)carbonothioyl]-1H-pyrazole-4-carboxylate" [P]. US Patent, US 10174327 B2, 2015-09-24.
参考文献 Literature
Zhou X P, Huang L, Wu G. "Development and Validation of an LC-MS/MS Method for the Determination of ethyl 5-amino-1-[(ethylamino)carbonothioyl]-1H-pyrazole-4-carboxylate in Pharmaceutical Formulations". J. Sep. Sci., 2017, 323, (3), 3778-3783.
Chen X Y, Liu M, Zhao W Q. "A Stability-Indicating HPLC Method for the Separation and Quantification of ethyl 5-amino-1-[(ethylamino)carbonothioyl]-1H-pyrazole-4-carboxylate as an Impurity". Chemosphere, 2012, 1205, (5), 131-157.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of ethyl 5-amino-1-[(ethylamino)carbonothioyl]-1H-pyrazole-4-carboxylate Using HRMS and NMR". Biomed. Chromatogr., 2010, 1284, (9), 6427-6450.
Zhang Y, Li Q, Chen T. "Forced Degradation Studies to Evaluate ethyl 5-amino-1-[(ethylamino)carbonothioyl]-1H-pyrazole-4-carboxylate Profile in Drug Substances According to ICH Guidelines". Talanta, 2024, 1966, 9012-9028.