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发明人徐明华,李文辉,林芳. "A Process for Preparing High-Purity (S)-2-Amino-4-(2-aminophenyl)-4-oxobutanoic acid xsulfuric acid salt" [P]. 中国发明专利, 专利号 CN 116265737 B, 授权公告日 2025-04-13.
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