发明人唐晓军,高志强,张德明. "Method for the Synthesis of Ethyl 2-(6,8-difluoro-2-methyl-4-oxoquinolin-1(4H)-yl)acetate" [P]. 中国发明专利, 专利号 CN 115543570 A, 授权公告日 2022-11-28.
发明人马晓峰,周伟,郭海燕. "A Process for Preparing High-Purity Ethyl 2-(6,8-difluoro-2-methyl-4-oxoquinolin-1(4H)-yl)acetate" [P]. 中国发明专利, 专利号 CN 110883353 B, 授权公告日 2025-03-19.
参考文献 Literature
Hughes D, Roberts J, Thomas A. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2018, 2304, (9), 3476-3506.
Brown R C, Davis S M. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". J. Sep. Sci., 2010, 435, (1), 4603-4617.
Zhou X P, Huang L, Wu G. "Identification and Structural Characterization of a Novel Degradation Product of Ethyl 2-(6,8-difluoro-2-methyl-4-oxoquinolin-1(4H)-yl)acetate Using HRMS and NMR". J. Nat. Prod., 2011, 505, (8), 7409-7418.