发明人朱建伟,郭海燕,王建平. "Method for the Synthesis of 1-(3',6'-Dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)-3-(2-mercaptoethyl)thiourea" [P]. 中国发明专利, 专利号 CN 109004799 B, 授权公告日 2018-12-25.
发明人何建平,孙丽萍,王建平. "A Process for Preparing High-Purity 1-(3',6'-Dihydroxy-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthen]-5-yl)-3-(2-mercaptoethyl)thiourea" [P]. 中国发明专利, 专利号 CN 117739287 B, 授权公告日 2025-04-03.
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