4-(Bromomethyl)-2-methyl-3-nitro-5-(trifluoromethoxy)pyridine
5-(Fluoromethyl)-3-methyl-4-nitro-2-(trifluoromethoxy)pyridine
3-(Fluoromethyl)-2-methyl-4-nitro-5-(trifluoromethoxy)pyridine
6-(Fluoromethyl)-4-methyl-3-nitro-2-(trifluoromethoxy)pyridine