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发明人钱学锋,沈红梅,李文辉. "Method for the Synthesis of 4-((4-(Methoxycarbonyl)-5-methyl-3-oxo-1,3-dihydro-2H-pyrrol-2-ylidene)methyl)benzoic acid" [P]. 中国发明专利, 专利号 CN 116576292 A, 授权公告日 2020-11-17.
发明人周伟,钱学锋,唐晓军. "A Process for Preparing High-Purity 4-((4-(Methoxycarbonyl)-5-methyl-3-oxo-1,3-dihydro-2H-pyrrol-2-ylidene)methyl)benzoic acid" [P]. 中国发明专利, 专利号 CN 108711307 A, 授权公告日 2025-10-27.
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