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