2-Hydroxy-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-3-carboxylic acid
3-(Fluoromethyl)-4-hydroxy-5-nitro-2-(trifluoromethoxy)pyridine
2-Hydroxy-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-5-carboxylic acid
4-(Difluoromethyl)-6-iodo-3-methyl-2-(trifluoromethoxy)pyridine