发明人钱学锋,李文辉,赵玉洁. "Method for the Synthesis of (Z)-Methyl 2-(1-(2-chlorophenyl)-4-((3-(dimethylamino)phenyl)(methylamino)methylene)-5-oxo-4,5-dihydro-1H-pyrazol-3-yl)acetate" [P]. 中国发明专利, 专利号 CN 112028497 A, 授权公告日 2020-07-25.
发明人韩伟,王建平,黄志刚. "A Process for Preparing High-Purity (Z)-Methyl 2-(1-(2-chlorophenyl)-4-((3-(dimethylamino)phenyl)(methylamino)methylene)-5-oxo-4,5-dihydro-1H-pyrazol-3-yl)acetate" [P]. 中国发明专利, 专利号 CN 110197556 A, 授权公告日 2022-02-24.
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