发明人罗永刚,韩伟,马晓峰. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 113676260 A, 授权公告日 2024-02-04.
发明人唐晓军,张德明,孙丽萍. "Method for the Synthesis of (4Z)-4-{[(5-chloro-2-hydroxyphenyl)amino]methylidene}-3-methyl-1-phenyl-4,5-dihydro-1H-pyrazol-5-one" [P]. 中国发明专利, 专利号 CN 113913389 A, 授权公告日 2015-01-23.
发明人郑宇鹏,韩伟,杨光. "A Process for Preparing High-Purity (4Z)-4-{[(5-chloro-2-hydroxyphenyl)amino]methylidene}-3-methyl-1-phenyl-4,5-dihydro-1H-pyrazol-5-one" [P]. 中国发明专利, 专利号 CN 112496100 B, 授权公告日 2015-02-24.
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