发明人李文辉,朱建伟,郭海燕. "Method for the Synthesis of 3-(4-Bromo-1h-pyrazol-1-yl)-2-(ethylamino)-2-methylpropanoic acid" [P]. 中国发明专利, 专利号 CN 116028214 A, 授权公告日 2020-11-24.
发明人孙丽萍,林芳,冯建国. "A Process for Preparing High-Purity 3-(4-Bromo-1h-pyrazol-1-yl)-2-(ethylamino)-2-methylpropanoic acid" [P]. 中国发明专利, 专利号 CN 110874775 B, 授权公告日 2017-11-11.
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