发明人朱建伟,马晓峰,胡光. "Method for the Synthesis of 5-Cyclopropyl-4-ethyl-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111971486 B, 授权公告日 2025-07-20.
发明人赵玉洁,沈红梅,杨光. "A Process for Preparing High-Purity 5-Cyclopropyl-4-ethyl-1H-pyrazole-3-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116207549 B, 授权公告日 2021-09-07.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Anal. Chem., 2023, 469, (3), 6840-6851.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2013, 1217, (7), 9749-9755.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 5-Cyclopropyl-4-ethyl-1H-pyrazole-3-carboxylic acid Using HRMS and NMR". Food Chem., 2015, 360, (12), 3156-3159.
Jensen P, Larsen A M, Olsen K. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2020, 1921, 2811-2827.