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发明人刘建华,罗永刚,黄志刚. "Method for the Synthesis of 3-Methyl-4-({[(4-methylphenyl)methyl]amino}methylidene)-4,5-dihydro-1H-pyrazol-5-one" [P]. 中国发明专利, 专利号 CN 111011539 A, 授权公告日 2021-12-01.
发明人林芳,马晓峰,张德明. "A Process for Preparing High-Purity 3-Methyl-4-({[(4-methylphenyl)methyl]amino}methylidene)-4,5-dihydro-1H-pyrazol-5-one" [P]. 中国发明专利, 专利号 CN 112473394 B, 授权公告日 2019-12-12.
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