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