Synonyms: Atriopeptin-21(rat), 21a-L-phenylalanine-21b-L-arginine-; 1,2-Dithia-5,8,11,14,17,20,23,26,29,32,35,38,41,44,47,50-hexadecaazacyclotripentacontane,cyclic peptide deriv.; 1-23-Rat atrial natriuretic factor; Atriopeptin II(rat); CGP 33244; L-Arginine,L-seryl-L-seryl-L-cysteinyl-L-phenylalanylglycylglycyl-L-arginyl-L-isoleucyl-L-a-aspartyl-L-arginyl-L-isoleucylglycyl-L-alanyl-L-glutaminyl-L-serylglycyl-L-leucylglycyl-L-cysteinyl-L-asparaginyl-L-seryl-L-phenylalanyl-,cyclic (3®19)-disulfide; Rat atrialnatriuretic peptide (103-125); Rat atriopeptin II; Rat atriopeptin(5-27)