4-(Difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine-6-sulfonyl chloride
6-(Aminomethyl)-2-methyl-3-(trifluoromethoxy)pyridine-4-carboxaldehyde
6-(Difluoromethyl)-3-nitro-2-(trifluoromethoxy)pyridine-4-sulfonyl chloride
2-(Aminomethyl)-3-methyl-6-(trifluoromethoxy)pyridine-5-carboxaldehyde