.beta.-(3-Hydroxyphenyl)propionic acid .beta.-(m-Hydroxyphenyl)propionic acid 3-(m-Hydroxyphenyl)propionic acid 3-Hydroxyphenylpropionic acid 621-54-5 Benzenepropanoic acid, 3-hydroxy- Hydrocinnamic acid, m-hydroxy- NSC33135 m-Hydroxyphenylpropionic acid