2-氨基-5-醛基噻唑

Methyl 6-bromopyrazolo[1,5-a]pyrimidine-2-carboxylate

2-氨基-6-溴吡啶并[2,3-d]嘧啶-4(3H)-酮

6-溴吡啶并[2,3-D]-2,4-二氨基嘧啶

5-甲基咪唑并[1,2-a]吡啶-3-甲醛