.alpha.-Phenylcinnamic acid .alpha.-Stilbenecarboxylic acid 2-Phenylcinnamic acid 2-Propenoic acid, 2,3-diphenyl- 3368-16-9 Acrylic acid, 2,3-diphenyl- Atropic acid, .beta.-phenyl- Benzeneacetic acid, .alpha.-(phenylmethylene)- Cinnamic acid, .alpha.-phenyl- NSC40614