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