发明人罗永刚,韩伟,钱学锋. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 108630828 A, 授权公告日 2023-01-23.
发明人王建平,周伟,李文辉. "Method for the Synthesis of (5Z)-5-(5-Chloro-1,2-dihydro-2-oxo-3H-indol-3-ylidene)-4-oxo-2-thioxo-3-thiazolidinepropanoic Acid" [P]. 中国发明专利, 专利号 CN 117489231 A, 授权公告日 2021-09-14.
发明人唐晓军,赵玉洁,沈红梅. "A Process for Preparing High-Purity (5Z)-5-(5-Chloro-1,2-dihydro-2-oxo-3H-indol-3-ylidene)-4-oxo-2-thioxo-3-thiazolidinepropanoic Acid" [P]. 中国发明专利, 专利号 CN 116343790 B, 授权公告日 2025-04-11.
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