4-[4-(4-chlorophenoxy)phenyl]-4-oxobutanoic acid 4-[4-(4-chlorophenoxy)phenyl]-4-oxo-butanoic acid 4-[4-(4-chlorophenoxy)phenyl]-4-keto-butyric acid 57148-29-5 AI3-32908 Benzenebutanoic acid, 4-(4-chlorophenoxy)-gamma-oxo- NSC61852 NCIOpen2_007756