发明人王建平,钱学锋,马晓峰. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 110903368 A, 授权公告日 2023-05-14.
发明人刘建华,黄志刚,朱建伟. "Method for the Synthesis of 2-Hydroxy-7-oxo-3-phenyl-4,7-dihydropyrazolo[1,5-a]pyrimidine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109716725 B, 授权公告日 2025-03-17.
发明人张德明,刘建华,高志强. "A Process for Preparing High-Purity 2-Hydroxy-7-oxo-3-phenyl-4,7-dihydropyrazolo[1,5-a]pyrimidine-6-carboxylic acid" [P]. 中国发明专利, 专利号 CN 116859876 B, 授权公告日 2021-11-18.
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