发明人林芳,郭海燕,钱学锋. "Method for the Synthesis of N-pyridin-3-ylpiperazine-1-carboxamide" [P]. 中国发明专利, 专利号 CN 114552001 A, 授权公告日 2018-05-06.
发明人郭海燕,周伟,杨光. "A Process for Preparing High-Purity N-pyridin-3-ylpiperazine-1-carboxamide" [P]. 中国发明专利, 专利号 CN 114144442 B, 授权公告日 2021-12-27.
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