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发明人郑宇鹏,杨光,徐明华. "Method for the Synthesis of Tert-butyl5,5-dioxo-4-oxa-5λ⁶-thia-6-azaspiro[2.4]heptane-6-carboxylate" [P]. 中国发明专利, 专利号 CN 111719622 B, 授权公告日 2021-06-11.
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