103429-31-8 CTOP CTOPA Ctop-NH2 Cys(2)-tyr(3)-orn(5)-pen(7)-amide L-Threoninamide, D-phenylalanyl-L-cysteinyl-L-tyrosyl-D-tryptophyl-L-ornithyl-L-threonyl-3-mercapto-L-valyl-, cyclic (2-7)-disulfide Phe-cycl(cys-tyr-trp-orn-thr-pen)thr-NH2 Phenylalanyl-cyclo(cysteinyltyrosyl-tryptophyl-ornithyl-threonyl-penicillamine)threoninamide