发明人钱学锋,陈志强,沈红梅. "Method for the Synthesis of 3-(4-(Difluoromethyl)-6-oxo-2-propyl-2,6-dihydro-7h-pyrazolo[3,4-b]pyridin-7-yl)propanoic acid" [P]. 中国发明专利, 专利号 CN 109453284 A, 授权公告日 2020-05-20.
发明人罗永刚,唐晓军,徐明华. "A Process for Preparing High-Purity 3-(4-(Difluoromethyl)-6-oxo-2-propyl-2,6-dihydro-7h-pyrazolo[3,4-b]pyridin-7-yl)propanoic acid" [P]. 中国发明专利, 专利号 CN 115476466 A, 授权公告日 2022-05-07.
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