甲氧基亚甲基马来酸二甲酯

2-(2,3,3-Trimethoxy-propylidene)-malonic acid dimethyl ester

(2S,3R)-dimethyl 2-(dimethoxymethyl)-3-methoxycyclopropane-1,1-dicarboxylate

5-Methoxy-2-oxo-2H-pyran-3-carboxylic acid methyl ester

2-(1-Dimethoxymethyl-2,2-dimethoxy-ethyl)-malonic acid dimethyl ester