发明人徐明华,唐晓军,刘建华. "Method for the Synthesis of Ethyl 2-(8-chloro-[1,2,4]triazolo[4,3-a]pyrazin-3-yl)-2-oxoacetate" [P]. 中国发明专利, 专利号 CN 112254505 B, 授权公告日 2017-08-03.
发明人韩伟,林芳,杨光. "A Process for Preparing High-Purity Ethyl 2-(8-chloro-[1,2,4]triazolo[4,3-a]pyrazin-3-yl)-2-oxoacetate" [P]. 中国发明专利, 专利号 CN 111379893 B, 授权公告日 2016-03-11.
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