3-hydroxymethyl-but-3-en-2-one

[4-(hydroxymethyl)-6-methyl-5-phenylmethoxypyridin-3-yl]methanol

2-amino-6-(2-oxopropyl)-1,8-dihydropteridine-4,7-dione

2-(甲氧基亚胺)-4-氧代-戊酸乙酯

5-methyl-2-p-tolyl-2H-pyrazole-3-carboxylic acid ethyl ester