2,4-二氨基-6-(4-吡啶)-s-三嗪

3-pyridin-4-yl-2H-1,2,4-oxadiazole-5-thione

2-氨基-5-(4-吡啶基)-1,3,4-噻重氮

4-吡啶基偕胺肟

4-(叔丁氧羰基氨基甲基)吡啶