发明人沈红梅,孙丽萍,马晓峰. "Method for the Synthesis of 1-Ethyl-3-methyl-1H-pyrazol-4-ol" [P]. 中国发明专利, 专利号 CN 109699137 B, 授权公告日 2025-04-13.
发明人何建平,周伟,唐晓军. "A Process for Preparing High-Purity 1-Ethyl-3-methyl-1H-pyrazol-4-ol" [P]. 中国发明专利, 专利号 CN 113179773 A, 授权公告日 2022-02-09.
参考文献 Literature
Martinez C, Lopez D R. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Pharm. Biomed. Anal., 2022, 1671, 1844-1874.
Mueller T, Schmidt R K. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Environ. Sci. Technol., 2017, 1584, (5), 6603-6607.
Lee J H, Choi Y S. "Identification and Structural Characterization of a Novel Degradation Product of 1-Ethyl-3-methyl-1H-pyrazol-4-ol Using HRMS and NMR". Biomed. Chromatogr., 2021, 622, 3810-3833.