4,5,6,7-四氢-3H-咪唑并[4,5-C]吡啶二盐酸盐

Benzyl 3,4,6,7-tetrahydro-5H-imidazo[4,5-c]pyridine-5-carboxylate

组胺

5,6,7,8-四氢-5-氧代咪唑并[1,5-c]嘧啶

4,5,6,7-四氢-1H-咪唑并[4,5-c]吡啶