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