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