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