2-(Bromomethyl)-5-methoxy-3-nitro-6-(trifluoromethoxy)pyridine
2-(Difluoromethyl)-6-methoxy-5-nitro-3-(trifluoromethoxy)pyridine
2-(Difluoromethyl)-6-methoxy-3-nitro-5-(trifluoromethoxy)pyridine
2-(Bromomethyl)-4-methoxy-6-nitro-3-(trifluoromethoxy)pyridine