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