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