咪唑

1-oxo-11-(2'-chloroacetyl)-5,11-dihydro-6H-pyrido[2,3-b][1,4]benzodiazepin-6-one

2-chloro-N-(2-chloropyridin-3-yl)benzamide

2-bromo-N-(2-chloropyridin-3-yl)benzamide

2-amino-N-(2-chloro-1-oxidopyridin-1-ium-3-yl)benzamide