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