发明人刘建华,郭海燕,周伟. "Method for the Synthesis of Tert-butyl 4-(1-ethyl-1H-pyrazole-3-carbonyl)piperazine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 110081677 B, 授权公告日 2016-11-27.
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