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