3-Hydroxy-6-nitro-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride
4-(Difluoromethyl)-3-iodo-2-methoxy-5-(trifluoromethoxy)pyridine
5-(Bromomethyl)-2-iodo-3-methoxy-6-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-2-iodo-3-methoxy-5-(trifluoromethoxy)pyridine