Methyl 6-amino-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-carboxylate
3-Amino-6-nitro-2-(trifluoromethoxy)pyridine-4-carboxaldehyde
3-Amino-6-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-carboxylic acid
4-Amino-2-nitro-5-(trifluoromethoxy)pyridine-3-carboxaldehyde