Synonyms: 1,2-Dithia-5,8,11,14,17-pentaazacycloeicosane,cyclic peptide deriv.; Human CGRP; Human CGRP-a; Human alpha calcitonin gene-related peptide; Humancalcitonin gene-related peptide 1; Human calcitonin gene-related peptide I;Human a-CGRP; Human a-calcitonin gene-related peptide;a-Calcitonin gene-related peptide(human reduced), cyclic (2®7)-disulfide