发明人赵玉洁,黄志刚,张德明. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111273091 A, 授权公告日 2021-06-17.
发明人张德明,胡光,徐明华. "Method for the Synthesis of 3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-thioxanthen]-3-one" [P]. 中国发明专利, 专利号 CN 113104611 A, 授权公告日 2024-07-22.
发明人朱建伟,王建平,马晓峰. "A Process for Preparing High-Purity 3',6'-Dihydroxy-3H-spiro[isobenzofuran-1,9'-thioxanthen]-3-one" [P]. 中国发明专利, 专利号 CN 113285722 A, 授权公告日 2017-08-17.
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