发明人朱建伟,王建平,韩伟. "Method for the Synthesis of Ethyl (2Z)-2-chloro-2-[2-(4-chloro-3-nitrophenyl)hydrazin-1-ylidene]acetate" [P]. 中国发明专利, 专利号 CN 112624672 A, 授权公告日 2015-07-14.
发明人郭海燕,沈红梅,马晓峰. "A Process for Preparing High-Purity Ethyl (2Z)-2-chloro-2-[2-(4-chloro-3-nitrophenyl)hydrazin-1-ylidene]acetate" [P]. 中国发明专利, 专利号 CN 110526052 B, 授权公告日 2022-06-05.
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