2-甲基-3,4'-联吡啶-6(1H)-酮

ethyl 4-(3-oxopentan-2-yl)-4H-pyridine-1-carboxylate

ethyl 4-(2-oxopropyl)-4H-pyridine-1-carboxylate

ethyl 2-(2-oxopropyl)-2H-pyridine-1-carboxylate

ethyl 4-phenacyl-4H-pyridine-1-carboxylate