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