4-Cyano-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-carboxylic acid
2-Cyano-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-methanol
4-Cyano-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-carboxylic acid
4-Cyano-6-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-carboxylic acid