6-Amino-3-nitro-4-(trifluoromethoxy)pyridine-2-methanol
6-Amino-4-(difluoromethyl)-2-hydroxy-3-(trifluoromethoxy)pyridine
6-Amino-4-(difluoromethyl)-2-fluoro-3-(trifluoromethoxy)pyridine
2-Amino-4-(difluoromethyl)-5-fluoro-3-(trifluoromethoxy)pyridine