3-(Difluoromethyl)-2-methoxy-6-nitro-4-(trifluoromethyl)pyridine
3-(Difluoromethyl)-2-methoxy-5-nitro-4-(trifluoromethyl)pyridine
3-(Difluoromethyl)-2-methoxy-4-nitro-5-(trifluoromethyl)pyridine
3-(Difluoromethyl)-5-methoxy-2-(trifluoromethyl)pyridine-4-acetic acid