(Ala(2))deltorphin I (D-Ala2)Deltorphin I 122752-15-2 Delt-I Deltorphin C Deltorphin I Glycinamide, L-tyrosyl-D-alanyl-L-phenylalanyl-L-alpha-aspartyl-L-valyl-L-valyl- Tyr-ala-phe-asp-val-val-gly-NH2 deltorphin I, Ala(2)-