发明人刘建华,周伟,韩伟. "Method for the Synthesis of Piperazine-PEG2-C2-NH-Boc" [P]. 中国发明专利, 专利号 CN 108566843 A, 授权公告日 2017-04-05.
发明人刘建华,林芳,马晓峰. "A Process for Preparing High-Purity Piperazine-PEG2-C2-NH-Boc" [P]. 中国发明专利, 专利号 CN 117417439 B, 授权公告日 2020-09-21.
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