Beta Homophenylalanine Beta Homophenylalanine Beta-homophenylalanine (6) Bromo-beta-homophenylalanine (12) Chloro-beta-homophenylalanine (30) Fluoro-beta-homophenylalanine (18) Iodo-beta-homophenylalanine (6) Methyl-beta-homophenylalanine (18) Nitro-beta-homophenylalanine (6)