4-Iodo-5-nitro-3-(trifluoromethoxy)pyridine-2-carboxylic acid
4-Iodo-2-nitro-3-(trifluoromethoxy)pyridine-5-carboxylic acid
3-(Difluoromethyl)-5-iodo-4-methyl-2-(trifluoromethoxy)pyridine
2-(Difluoromethyl)-6-iodo-4-methyl-3-(trifluoromethoxy)pyridine