3-Amino-4-(difluoromethyl)-2-hydroxy-5-(trifluoromethoxy)pyridine
4-Amino-3-(chloromethyl)-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine
3-Amino-2-(difluoromethyl)-4-hydroxy-5-(trifluoromethoxy)pyridine
4-Amino-6-(chloromethyl)-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine