5-(Bromomethyl)-2-methoxy-3-(trifluoromethoxy)pyridine-4-carboxylic acid
4-(Bromomethyl)-5-methoxy-3-(trifluoromethoxy)pyridine-2-carboxylic acid
6-(Chloromethyl)-3-methyl-2-nitro-4-(trifluoromethoxy)pyridine
4-(Bromomethyl)-3-methoxy-2-(trifluoromethoxy)pyridine-5-carboxylic acid