Methyl 2-bromo-6-cyano-4-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 2-bromo-3-cyano-6-(trifluoromethoxy)pyridine-5-carboxylate
3-Bromo-6-cyano-2-(trifluoromethoxy)pyridine-4-carboxylic acid
3-Bromo-5-cyano-4-(trifluoromethoxy)pyridine-2-carboxylic acid