发明人韩伟,周伟,郑宇鹏. "一种那非乙酰酸的合成方法" [P]. 中国发明专利, 专利号 CN 116316107 A, 授权公告日 2019-10-06.
发明人林芳,何建平,孙丽萍. "Method for the Synthesis of 5-(5-Carboxy-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one" [P]. 中国发明专利, 专利号 CN 113914291 B, 授权公告日 2017-08-17.
发明人张德明,钱学锋,朱建伟. "A Process for Preparing High-Purity 5-(5-Carboxy-2-ethoxyphenyl)-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one" [P]. 中国发明专利, 专利号 CN 114948366 B, 授权公告日 2019-08-21.
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