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