methyl propylpyridine-2,6-dicarboxylate

6-乙酰基-2-吡啶羧酸

2,6-吡啶二羧酸单甲酯

3,6,9,12-tetraoxa-18-azabicyclo[12.3.1]octadeca-1(18),14,16-triene-2,13-dione

3,6,9,12,15-pentaoxa-21-azabicyclo[15.3.1]henicosa-1(21),17,19-triene-2,16-dione