159440-06-9 4-Piperidinecarboxylic acid, 1-[N-[N-[(2-methylpropoxy)carbonyl]-D-phenylalanyl]-3-(1-naphthalenyl)-D-alanyl]-, 1-[[[1-(aminocarbonyl)-2-methylpropyl]amino]carbonyl]-3-methylbutyl ester, [S-(R*,R*)]- AIDS-031421 AIDS031421 Peptide 7140 iBOC-[D-Phe]-[D-.alpha.-Nal]-Pip-[.alpha.-(OH)-Leu]-Val-NH2