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