发明人李文辉,何建平,罗永刚. "Method for the Synthesis of 4-(2,3-Dimethyl-4-propoxybenzylidene)pyrazolidine-3,5-dione" [P]. 中国发明专利, 专利号 CN 113543745 A, 授权公告日 2021-03-08.
Martínez F, Kowalski A, Mueller T C. "A Process for Preparing High-Purity 4-(2,3-Dimethyl-4-propoxybenzylidene)pyrazolidine-3,5-dione" [P]. European Patent, EP 3533850 A1, 2020-10-09.
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