Davis P L, Kumar R, Mueller T. "Method for the Synthesis of Isopropyl 1-methyl-1H-pyrazole-4-carboxylate" [P]. US Patent, US 11537746 B2, 2019-04-24.
发明人冯建国,徐明华,钱学锋. "A Process for Preparing High-Purity Isopropyl 1-methyl-1H-pyrazole-4-carboxylate" [P]. 中国发明专利, 专利号 CN 116944218 A, 授权公告日 2025-04-26.
参考文献 Literature
Kumar A, Sharma P, Patel R S. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Talanta, 2016, 1959, (12), 364-372.
Yang F, Sun W, Liu J. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chem., 2014, 2435, (1), 6053-6069.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of Isopropyl 1-methyl-1H-pyrazole-4-carboxylate Using HRMS and NMR". Chromatographia, 2023, 1696, (1), 9343-9371.