发明人赵玉洁,钱学锋,黄志刚. "一种的合成方法" [P]. 中国发明专利, 专利号 CN 109617668 A, 授权公告日 2025-03-18.
发明人周伟,林芳,郭海燕. "Method for the Synthesis of 4-((2-Ethylphenyl)amino)-2-(4-methylpiperazin-1-yl)-4-oxobutanoic acid" [P]. 中国发明专利, 专利号 CN 109658477 A, 授权公告日 2017-04-28.
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