发明人王建平,孙丽萍,郑宇鹏. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109917986 A, 授权公告日 2017-09-13.
发明人郭海燕,沈红梅,唐晓军. "Method for the Synthesis of Hydroxy-peg3-ethyl ester" [P]. 中国发明专利, 专利号 CN 111811501 A, 授权公告日 2019-01-19.
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