3-(2-丙炔-1-基氧基)吡啶

呋喃并[3,2-b]吡啶-2-羧醛

2-methyl-2,3-dihydrofuro[3,2-b]pyridin-3-ol

呋喃并[3,2-b]吡啶

3-羟基-2-吡啶甲酸