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发明人林芳,唐晓军,马晓峰. "Method for the Synthesis of Ethyl 3-methyl-4-oxo-4,7-dihydroisothiazolo[5,4-b]pyridine-5-carboxylate" [P]. 中国发明专利, 专利号 CN 117572834 B, 授权公告日 2023-04-08.
发明人冯建国,罗永刚,徐明华. "A Process for Preparing High-Purity Ethyl 3-methyl-4-oxo-4,7-dihydroisothiazolo[5,4-b]pyridine-5-carboxylate" [P]. 中国发明专利, 专利号 CN 116557869 B, 授权公告日 2022-05-12.
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