发明人徐明华,郑宇鹏,周伟. "Method for the Synthesis of 3-Methyl-4-oxo-4,7-dihydroisothiazolo[5,4-b]pyridine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 113935788 A, 授权公告日 2024-04-17.
发明人沈红梅,何建平,钱学锋. "A Process for Preparing High-Purity 3-Methyl-4-oxo-4,7-dihydroisothiazolo[5,4-b]pyridine-5-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109440062 A, 授权公告日 2022-04-15.
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