151911-03-4 Cyclo(beta-alanyl-L-leucyl-psi(CH2-NH)-L-alpha-aspartyl-L-glutaminyl-L-tryptophyl-L-phenylalanyl), phenylmethyl ester Cyclo(leu-psi(CH2NH)-asp(obzl)-gln-trp-phe-beta-ala) Men 10,573 Men 10573 Men-10,573 beta-Alanine, N-(2-amino-4-methylpentyl)-L-alpha-aspartyl-L-glutaminyl-L-tryptophyl-L-phenylalanyl-, 1-(phenylmethyl) ester, cyclic (5-1)-peptide, (S)-