28286-72-8
acetyl-methyl-malonic acid diethyl ester
2597-54-8
N-乙酰基氨基甲酸乙酯
56715-92-5
acetoxy-fumaric acid diethyl ester
34292-08-5
3-acetoxy-1-phenyl-but-2-en-1-one
861576-31-0
3-(2,4-dimethyl-benzylamino)-crotonic acid ethyl ester

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