2-(Difluoromethyl)-3-methyl-6-(trifluoromethyl)pyridine-4-carboxaldehyde
5-(Difluoromethyl)-3-methyl-2-(trifluoromethyl)pyridine-4-carboxaldehyde
5-(Difluoromethyl)-3-methyl-4-(trifluoromethyl)pyridine-2-carboxaldehyde
2-(Difluoromethyl)-3-methyl-5-(trifluoromethyl)pyridine-4-carboxaldehyde