Synonyms: Atriopeptin-21(rat),N-(N2-L-arginyl-L-arginyl)-21a-L-phenylalanine-21b-L-arginine-21c-L-tyrosine-;1,2-Dithia-5,8,11,14,17,20,23,26,29,32,35,38,41,44,47,50-hexadecaazacyclotripentacontane,cyclic peptide deriv.; (101-126)-Rat atrial natriuretic factor; L 364343; Ratatrial natriuretic factor(8-33); Rat atrial natriuretic factor-26; Ratatriopeptin(101-126); Rat atriopeptin(3-28); Rat atriopeptin(8-33)