3-Bromo-5-methyl-4-(trifluoromethoxy)pyridine-2-carboxylic acid
4-Bromo-2-nitro-3-(trifluoromethoxy)pyridine-5-carboxylic acid
5-Bromo-3-nitro-4-(trifluoromethoxy)pyridine-2-carboxylic acid
3-Chloro-2-cyano-4-(trifluoromethoxy)pyridine-6-carboxylic acid