发明人徐明华,胡光,孙丽萍. "Method for the Synthesis of 3-{ethyl[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-2-methylpropanoic acid" [P]. 中国发明专利, 专利号 CN 116380571 A, 授权公告日 2015-11-01.
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