发明人李文辉,林芳,杨光. "Method for the Synthesis of 2-{(Methylsulfonyl)[4-(trifluoromethyl)phenyl]amino}butanoic acid" [P]. 中国发明专利, 专利号 CN 117804118 A, 授权公告日 2020-12-26.
发明人沈红梅,韩伟,何建平. "A Process for Preparing High-Purity 2-{(Methylsulfonyl)[4-(trifluoromethyl)phenyl]amino}butanoic acid" [P]. 中国发明专利, 专利号 CN 113221620 A, 授权公告日 2018-03-23.
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