MeSH note : RN given refers to disodium salt; structure given in first source;
CISMeF synonym : disodium 7-benzamido-4-hydroxy-3-[[4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate; C. I. direct red 81; CI 28160; benzo fast red 8BL; sirius red 4B;