123689-72-5 H-His-D-arg-ala-trp-D-phe-lys-NH2 Haatpln Histidyl-arginyl-alanyl-tryptophyl-phenylalanyl-lysinamide L-Lysinamide, L-histidyl-D-arginyl-L-alanyl-L-tryptophyl-D-phenylalanyl-