6-(Difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine-3-methanol
3-(Difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine-4-carboxylic acid
6-(Difluoromethyl)-3-nitro-4-(trifluoromethoxy)pyridine-2-methanol
6-Methoxy-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-2-acetic acid