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