5-Isoasp-delta sleep-inducing peptide 5-L-beta-Aspartic aciddelta sleep-inducing peptide (rabbit) 82602-88-8 Isoasp(5)-dsip Trp-ala-gly-gly-isoasp-ala-ser-gly-glu delta Sleep-inducing peptide, isoasp(5)- delta sleep-inducing peptide (rabbit), 5-L-beta-aspartic acid-