Methyl 2-amino-6-(bromomethyl)-4-(difluoromethyl)pyridine-3-carboxylate
Methyl 3-amino-2-(bromomethyl)-4-(difluoromethyl)pyridine-5-carboxylate
2-Amino-5-(difluoromethyl)-3-methylpyridine-6-sulfonamide
Methyl 2-amino-5-(bromomethyl)-6-(difluoromethyl)pyridine-3-carboxylate