4-Hydroxy-5-(trifluoromethoxy)pyridine-2-carboxaldehyde
3-(Difluoromethyl)-4-methyl-2-(trifluoromethoxy)pyridine-6-carboxylic acid
3-(Difluoromethyl)-2-methyl-6-(trifluoromethoxy)pyridine-4-carboxylic acid
4-Hydroxy-2-(trifluoromethoxy)pyridine-6-carboxaldehyde