3-(Difluoromethyl)-6-nitro-2-(trifluoromethyl)pyridine-5-carboxylic acid
3-(Difluoromethyl)-6-nitro-2-(trifluoromethyl)pyridine-4-carboxaldehyde
3-(Difluoromethyl)-6-nitro-4-(trifluoromethyl)pyridine-2-carboxaldehyde
5-(Difluoromethyl)-2-nitro-4-(trifluoromethyl)pyridine-3-carboxylic acid