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