发明人陈志强,钱学锋,黄志刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 111205696 A, 授权公告日 2020-11-02.
发明人孙丽萍,罗永刚,周伟. "Method for the Synthesis of (4Z)-1-(4-Chlorophenyl)-3-ethoxy-4-{[(4-methoxyphenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one" [P]. 中国发明专利, 专利号 CN 114657550 B, 授权公告日 2019-05-17.
发明人赵玉洁,周伟,马晓峰. "A Process for Preparing High-Purity (4Z)-1-(4-Chlorophenyl)-3-ethoxy-4-{[(4-methoxyphenyl)amino]methylidene}-4,5-dihydro-1H-pyrazol-5-one" [P]. 中国发明专利, 专利号 CN 110995477 A, 授权公告日 2017-12-02.
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