发明人张德明,罗永刚,刘建华. "Method for the Synthesis of piperazin-2-one hydrochloride" [P]. 中国发明专利, 专利号 CN 111058284 B, 授权公告日 2020-09-21.
Kumar R, Stevens L M, Anderson J P. "A Process for Preparing High-Purity piperazin-2-one hydrochloride" [P]. US Patent, US 9611994 B2, 2015-05-23.
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