发明人李文辉,何建平,胡光. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 112539752 A, 授权公告日 2018-04-27.
发明人郭海燕,高志强,韩伟. "Method for the Synthesis of 2,2-Difluoro-2-(3-methyl-1H-indazol-6-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 116994590 A, 授权公告日 2020-06-19.
发明人罗永刚,孙丽萍,杨光. "A Process for Preparing High-Purity 2,2-Difluoro-2-(3-methyl-1H-indazol-6-yl)acetic acid" [P]. 中国发明专利, 专利号 CN 114134016 B, 授权公告日 2025-06-19.
参考文献 Literature
Yamamoto K, Tanaka H, Suzuki T. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". J. Nat. Prod., 2011, 1154, 949-971.
Zhou X P, Huang L, Wu G. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2017, 1684, 6367-6376.
Brown R C, Davis S M. "Identification and Structural Characterization of a Novel Degradation Product of 2,2-Difluoro-2-(3-methyl-1H-indazol-6-yl)acetic acid Using HRMS and NMR". Chemosphere, 2017, 423, (6), 7905-7914.