Johansson L, Jørgensen K, Martínez F. "一种的合成方法" [P]. European Patent, EP 3885082 A1, 2022-06-08.
发明人孙丽萍,胡光,张德明. "Method for the Synthesis of 4-{[(4-methylphenyl)amino]methylidene}-3-phenyl-4,5-dihydro-1H-pyrazol-5-one" [P]. 中国发明专利, 专利号 CN 114141384 B, 授权公告日 2018-08-10.
Martínez F, Mueller T C, Nielsen H. "A Process for Preparing High-Purity 4-{[(4-methylphenyl)amino]methylidene}-3-phenyl-4,5-dihydro-1H-pyrazol-5-one" [P]. European Patent, EP 3458543 A1, 2021-09-28.
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