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