ethyl 4-<(2,3-dihydrobenzofuran)-3-yl>butyrate

5-苯基-1H-吡咯-3-羧酸乙酯

Ethyl 3-(tert-butylamino)propanoate

3-[tert-butyl-(2-ethoxycarbonyl-ethyl)-amino]-propionic acid ethyl ester

4-苯基香豆素