发明人何建平,唐晓军,杨光. "Method for the Synthesis of 3,5-Dimethyl-1-((tetrahydro-2H-pyran-4-yl)methyl)-1H-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 111067378 B, 授权公告日 2018-10-19.
发明人朱建伟,黄志刚,郑宇鹏. "A Process for Preparing High-Purity 3,5-Dimethyl-1-((tetrahydro-2H-pyran-4-yl)methyl)-1H-pyrazole-4-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109832797 B, 授权公告日 2020-05-19.
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". Food Chem., 2010, 573, (2), 7561-7572.
Lee J H, Choi Y S. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Nat. Prod., 2020, 1555, 1085-1093.
Jensen P, Larsen A M, Olsen K. "Identification and Structural Characterization of a Novel Degradation Product of 3,5-Dimethyl-1-((tetrahydro-2H-pyran-4-yl)methyl)-1H-pyrazole-4-carboxylic acid Using HRMS and NMR". Molecules, 2023, 2283, (1), 9168-9171.
Yang F, Sun W, Liu J. "Forced Degradation Studies to Evaluate Profile in Drug Substances According to ICH Guidelines". J. Sep. Sci., 2021, 1619, 1849-1858.