2-(对甲苯磺酰氧基)乙酸乙酯

4-硫代吗啉乙酸乙酯

ethyl 2-[4-(2-ethoxy-2-oxoethyl)piperazin-1-yl]acetate

2-氧代环壬烷羧酸乙酯

Cyclopropanecarboxylic acid, 2-(bromomethyl)-, ethyl ester, trans-