6-(Aminomethyl)-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-sulfonamide
5-(Bromomethyl)-2-(difluoromethyl)-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine
2-(Aminomethyl)-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-sulfonamide
5-Amino-2-(chloromethyl)-4-(difluoromethyl)pyridine