3641-44-9 Alanine, 3-carboxy-4-methoxyphenyl-, hydrochloride, DL- DL-3-Carboxy-4-methoxyphenylalanine hydrochloride DL-alpha-Amino-3-carboxy-4-methoxy-hydrocinnamic acid hydrochloride HYDROCINNAMIC ACID, alpha-AMINO-3-CARBOXY-4-METHOXY-, HYDROCHLORIDE, DL-