发明人朱建伟,林芳,韩伟. "Method for the Synthesis of Ethyl 2-((3-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)butanoate" [P]. 中国发明专利, 专利号 CN 111090064 B, 授权公告日 2019-09-23.
发明人林芳,杨光,胡光. "A Process for Preparing High-Purity Ethyl 2-((3-phenyl-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)butanoate" [P]. 中国发明专利, 专利号 CN 114046089 A, 授权公告日 2016-10-26.
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