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发明人唐晓军,周伟,孙丽萍. "A Process for Preparing High-Purity Ethyl β-Oxo-1,4-dioxaspiro[4.4]nonane-7-propanoate" [P]. 中国发明专利, 专利号 CN 115781046 B, 授权公告日 2022-10-12.
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