发明人黄志刚,韩伟,杨光. "Method for the Synthesis of 1-(2-Chloroethyl)-3-(4-cyanophenyl)urea" [P]. 中国发明专利, 专利号 CN 111381355 A, 授权公告日 2018-09-22.
Hughes D C, Johnson M A, Kumar R. "A Process for Preparing High-Purity 1-(2-Chloroethyl)-3-(4-cyanophenyl)urea" [P]. US Patent, US 11188056 B2, 2015-01-11.
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