Syonyms Name: C.I. 22155; C.I. Direct Red 13; C.I. Direct Red 13 (7CI); C.I. Direct Red 13, disodium salt (8CI); -; disodium 4-amino-3-[(E)-(4'-{2-[(2E)-2-imino-8-oxo-6-sulfonato-2,8-dihydronaphthalen-1-yl]hydrazino}biphenyl-4-yl)diazenyl]naphthalene-1-sulfonate; Disod