发明人郭海燕,罗永刚,冯建国. "Method for the Synthesis of tert-Butyl 3-(difluoromethyl)-3-hydroxyazetidine-1-carboxylate" [P]. 中国发明专利, 专利号 CN 110004038 A, 授权公告日 2019-09-09.
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