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发明人高志强,刘建华,林芳. "Method for the Synthesis of Bromo-PEG4-CH2COOtBu" [P]. 中国发明专利, 专利号 CN 113815207 B, 授权公告日 2023-03-26.
发明人黄志刚,罗永刚,孙丽萍. "A Process for Preparing High-Purity Bromo-PEG4-CH2COOtBu" [P]. 中国发明专利, 专利号 CN 114389057 A, 授权公告日 2017-01-03.
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