发明人韩伟,王建平,林芳. "Method for the Synthesis of 4-(Difluoromethyl)-6-hydroxy-2-methoxynicotinic acid" [P]. 中国发明专利, 专利号 CN 114886802 A, 授权公告日 2023-12-05.
发明人周伟,陈志强,韩伟. "A Process for Preparing High-Purity 4-(Difluoromethyl)-6-hydroxy-2-methoxynicotinic acid" [P]. 中国发明专利, 专利号 CN 110007602 B, 授权公告日 2023-06-16.
参考文献 Literature
Mueller T, Schmidt R K. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Phytochemistry, 2019, 2301, 6920-6939.
Martinez C, Lopez D R. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Pharm. Biomed. Anal., 2020, 2310, 2158-2167.
Smith J A, Johnson M B. "Identification and Structural Characterization of a Novel Degradation Product of 4-(Difluoromethyl)-6-hydroxy-2-methoxynicotinic acid Using HRMS and NMR". J. Nat. Prod., 2020, 1588, (7), 1118-1145.