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发明人郑宇鹏,赵玉洁,郭海燕. "A Process for Preparing High-Purity Methyl 5-ethyl-2-isopropyl-1-oxaspiro[2.4]heptane-2-carboxylate" [P]. 中国发明专利, 专利号 CN 114381735 B, 授权公告日 2017-11-17.
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