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