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发明人冯建国,郭海燕,徐明华. "A Process for Preparing High-Purity (1s,2s)-2-(9h-Fluoren-9-ylmethoxycarbonylamino)cyclobutanecarboxylicacid" [P]. 中国发明专利, 专利号 CN 113254800 A, 授权公告日 2015-10-09.
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