3-Amino-2-(difluoromethyl)-5-nitropyridine-4-sulfonamide
3-Amino-5-(aminomethyl)-4-(difluoromethyl)-2-(trifluoromethyl)pyridine
2-Amino-5-(difluoromethyl)-6-nitropyridine-3-sulfonamide
3-Amino-4-(aminomethyl)-5-(difluoromethyl)-2-(trifluoromethyl)pyridine