5-环戊基-5-乙基巴比妥酸

ethyl 3-ethyl-2-oxooxolane-3-carboxylate

5-ethyl-5-(2-hydroxypropyl)-1,3-diazinane-2,4,6-trione

diethyl 2-(1-piperidin-1-ylpropan-2-yl)propanedioate

2-phenylethyl 4-(1,3-benzodioxol-5-yl)-2,7,7-trimethyl-5-oxo-1,4,6,8-tetrahydroquinoline-3-carboxylate