(E)-3-甲酰基丁-2-烯基乙酸酯

三甲基乙酸酐

trans-γ-acetoxytiglic aldehyde dimethyl acetal

2-amino-1,6-dihydro-6-oxo-4-Pyrimidineacetic acid,methyl ester

methyl (2-pivalamido-4(1H)-oxopyrimidin-6-yl)acetate