3-Amino-6-nitro-2-(trifluoromethoxy)pyridine-5-carboxylic acid
6-Amino-2-methyl-3-(trifluoromethoxy)pyridine-4-sulfonamide
5-Amino-2-nitro-3-(trifluoromethoxy)pyridine-6-carboxylic acid
5-Amino-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-carboxylic acid