27759-18-8 Cysteinyl-L-tyrosyl-phenylalanyl glutaminyl-asparaginyl-cysteinamide-cyclic (1-6)-disulfide L-Cysteinamide, L-cysteinyl-L-tyrosyl-L-phenylalanyl-L-glutaminyl-L-asparaginyl-, cyclic (1-6)-disulfide Pressinamide