145706-74-7 Cyclo(1,5)-Ac-pen-arg-gly-asp-cys-NH2 Cyclo(acetylpenicillamyl-arginyl-glycyl-aspartyl-cysteinamide) L-Cysteinamide, N-acetyl-3-mercapto-D-valyl-L-arginylglycyl-L-alpha-aspartyl-, cyclic (1-5)-disulfide c-Apagac