5,5-dimethyl-3-methoxycarbonyl tetronic acid

methyl 2-(2-methoxycarbonylacetoxy)-2-methyl propionate

ethyl 2-acetyloxy-2-methylpropanoate

5,5-dimethyl-4-(N-phenylamino)-2(5H)-furanone

丙二酸二乙酯钠盐