发明人刘建华,罗永刚,胡光. "Method for the Synthesis of 1-[3-(4-piperidyl)phenyl]hexahydropyrimidine-2,4-dione" [P]. 中国发明专利, 专利号 CN 109953931 B, 授权公告日 2016-01-14.
发明人刘建华,朱建伟,王建平. "A Process for Preparing High-Purity 1-[3-(4-piperidyl)phenyl]hexahydropyrimidine-2,4-dione" [P]. 中国发明专利, 专利号 CN 109923833 B, 授权公告日 2021-05-10.
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