3-(Difluoromethyl)-5-nitro-4-(trifluoromethoxy)pyridine-2-sulfonamide
4-(Aminomethyl)-2-methyl-3-nitro-6-(trifluoromethoxy)pyridine
3-(Fluoromethyl)-6-methyl-2-nitro-4-(trifluoromethoxy)pyridine
3-(Difluoromethyl)-4-nitro-5-(trifluoromethoxy)pyridine-2-sulfonamide