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