2-氰基-3-硝基-5-氯吡啶

2-氨基-5-氯-3-碘吡啶

咪唑并[1,2-a]吡啶

2-chloro-6,11-dihydro-6,11-dioxo-naphtho-[2',3':4,5]imidazo[1,2-a]pyridine

3-溴-5-氯-1H-吡咯并[2,3-B]吡啶