发明人赵玉洁,王建平,钱学锋. "Method for the Synthesis of m-PEG4-CH2COOH" [P]. 中国发明专利, 专利号 CN 117827039 A, 授权公告日 2015-09-15.
发明人张德明,李文辉,林芳. "A Process for Preparing High-Purity m-PEG4-CH2COOH" [P]. 中国发明专利, 专利号 CN 108579913 B, 授权公告日 2022-08-24.
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