5-Bromo-3-(chloromethyl)-2-cyano-4-(trifluoromethoxy)pyridine
6-Amino-4-(difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine
3-Bromo-5-(chloromethyl)-4-cyano-2-(trifluoromethoxy)pyridine
2-Amino-4-(difluoromethyl)-5-nitro-3-(trifluoromethoxy)pyridine