130304-73-3 Cyclo(cys-lys-arg-gly-pro-gly-ser-asp-phe-asp)tyr D-Loop peptide D-Loop protein L-Cysteinyl-L-lysyl-L-arginylglycyl-L-prolylglycyl-L-seryl-L-alpha-aspartyl-L-phenylalanyl-L-alpha-aspartyl-L-tyrosinamide cyclic (10-1)-peptide L-Tyrosinamide, L-cysteinyl-L-lysyl-L-arginylglycyl-L-prolylglycyl-L-seryl-L-alpha-aspartyl-L-phenylalanyl-L-alpha-aspartyl-, cyclic (10-1)-peptide