发明人孙丽萍,高志强,黄志刚. "Method for the Synthesis of 6-Chloro-9a-(2-fluoroethyl)-7-methoxy-9,9a-dihydro-1H-fluoren-3(2H)-one" [P]. 中国发明专利, 专利号 CN 113025952 A, 授权公告日 2019-02-13.
发明人罗永刚,韩伟,陈志强. "A Process for Preparing High-Purity 6-Chloro-9a-(2-fluoroethyl)-7-methoxy-9,9a-dihydro-1H-fluoren-3(2H)-one" [P]. 中国发明专利, 专利号 CN 112747422 A, 授权公告日 2019-09-12.
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