乙基2-呋喃甲基醚 ethyl 2-furylmethyl ether 乙基2-萘基醚；乙氧萘 ethyl 2-naphthyl ether 3-氧丁酸乙酯；乙酰乙酸乙酯 ethyl 3-oxobutanoate; ethyl acetoacetate ..
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乙基2-呋喃甲基醚 ethyl 2-furylmethyl ether 乙基2-萘基醚；乙氧萘 ethyl 2-naphthyl ether 3-氧丁酸乙酯；乙酰乙酸乙酯 ethyl 3-oxobutanoate; ethyl acetoacetate ..
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