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