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