.beta.-Phenylbenzenepropanoic acid 3,3-Diphenylpropanoic acid 3,3-Diphenylpropionic acid 606-83-7 Benzenepropanoic acid, .beta.-phenyl- Diphenylpropionic acid Hydrocinnamic acid, .beta.-phenyl- NSC6797 Propionic acid, 3,3-diphenyl-