发明人刘建华,黄志刚,赵玉洁. "Method for the Synthesis of 6-((2-(Bis(pyridin-2-ylmethyl)amino)ethyl)amino)-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-diyl diacetate" [P]. 中国发明专利, 专利号 CN 117587780 A, 授权公告日 2021-03-05.
发明人唐晓军,冯建国,钱学锋. "A Process for Preparing High-Purity 6-((2-(Bis(pyridin-2-ylmethyl)amino)ethyl)amino)-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-diyl diacetate" [P]. 中国发明专利, 专利号 CN 110184903 A, 授权公告日 2021-01-17.
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