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