2,4-Difluoro-5-(fluoromethyl)-3-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-3-methyl-5-(trifluoromethoxy)pyridine-2-carboxaldehyde
6-Hydroxy-2-iodo-3-(trifluoromethoxy)pyridine
4-(Difluoromethyl)-2-methyl-5-(trifluoromethoxy)pyridine-3-carboxaldehyde