发明人杨光,韩伟,罗永刚. "Method for the Synthesis of (3Z)-3-{[4-(4-chlorophenyl)piperazin-1-yl]methylidene}-1,3-dihydro-2-benzofuran-1-one" [P]. 中国发明专利, 专利号 CN 115689731 B, 授权公告日 2022-09-09.
发明人沈红梅,赵玉洁,罗永刚. "A Process for Preparing High-Purity (3Z)-3-{[4-(4-chlorophenyl)piperazin-1-yl]methylidene}-1,3-dihydro-2-benzofuran-1-one" [P]. 中国发明专利, 专利号 CN 109244587 A, 授权公告日 2019-12-01.
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