(E)-3-(吡啶-2-基)丙烯酸叔丁酯

(E)-tert-butyl 3-(4-pyridyl)prop-2-enoate

tert-butyl (4S)-4-ethyl-4,6-dihydroxy-3,10-dioxo-1,8-dihydropyrano[3,4-f]indolizine-7-carboxylate

2-甲基-2-丙基2H-吖丙因-3-羧酸酯