发明人王建平,唐晓军,朱建伟. "Method for the Synthesis of ethyl 5-oxo-1,4,6,7-tetrahydroindazole-3-carboxylate" [P]. 中国发明专利, 专利号 CN 111554967 A, 授权公告日 2018-02-28.
发明人郭海燕,胡光,林芳. "A Process for Preparing High-Purity ethyl 5-oxo-1,4,6,7-tetrahydroindazole-3-carboxylate" [P]. 中国发明专利, 专利号 CN 111103181 B, 授权公告日 2016-08-14.
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