2-Amino-3-(difluoromethyl)-6-hydroxypyridine-5-carboxamide
5-Amino-3-(difluoromethyl)-2-hydroxy-4-(trifluoromethyl)pyridine
3-Amino-5-(difluoromethyl)-6-hydroxy-2-(trifluoromethyl)pyridine
5-Amino-3-(difluoromethyl)-4-hydroxy-2-(trifluoromethyl)pyridine