发明人林芳,高志强,罗永刚. "Method for the Synthesis of Dimethyl 1-(2-cyanoethyl)-5-methyl-1H-pyrazole-3,4-dicarboxylate" [P]. 中国发明专利, 专利号 CN 112497533 A, 授权公告日 2019-06-27.
发明人钱学锋,沈红梅,胡光. "A Process for Preparing High-Purity Dimethyl 1-(2-cyanoethyl)-5-methyl-1H-pyrazole-3,4-dicarboxylate" [P]. 中国发明专利, 专利号 CN 109039296 B, 授权公告日 2016-11-06.
参考文献 Literature
Lee J H, Choi Y S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2023, 585, 4833-4847.
Kowalski T, Nowak Z. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Methods, 2025, 126, (10), 2998-3006.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Dimethyl 1-(2-cyanoethyl)-5-methyl-1H-pyrazole-3,4-dicarboxylate Using HRMS and NMR". J. Sep. Sci., 2012, 2217, (9), 2502-2527.
Xu M, Hu Y, Zhou D. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". Anal. Chim. Acta, 2018, 2302, 2485-2504.