Methyl 2-(difluoromethyl)-5-nitro-6-(trifluoromethoxy)pyridine-3-acetate
6-(Bromomethyl)-3-methyl-4-nitro-2-(trifluoromethoxy)pyridine
2-(Difluoromethyl)-3-methoxy-6-(trifluoromethoxy)pyridine-4-carboxylic acid
2-(Bromomethyl)-5-methyl-3-nitro-4-(trifluoromethoxy)pyridine