3-(Bromomethyl)-6-cyano-2-(trifluoromethoxy)pyridine-5-carboxylic acid
5-(Bromomethyl)-2-cyano-3-(trifluoromethoxy)pyridine-6-carboxylic acid
4-(Bromomethyl)-3-cyano-2-(trifluoromethoxy)pyridine-6-carboxylic acid
4-(Bromomethyl)-2-cyano-3-(trifluoromethoxy)pyridine-6-carboxylic acid