发明人刘建华,钱学锋,王建平. "Method for the Synthesis of 3-[(6-Chloropyridazin-3-yl)amino]-1-phenylurea" [P]. 中国发明专利, 专利号 CN 111914046 B, 授权公告日 2023-12-27.
发明人陈志强,郭海燕,朱建伟. "A Process for Preparing High-Purity 3-[(6-Chloropyridazin-3-yl)amino]-1-phenylurea" [P]. 中国发明专利, 专利号 CN 115698573 A, 授权公告日 2020-11-20.
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