1,4-Benzenedisulfonic acid, 2,2'-[carbonylbis[imino-3,1-phenylenecarbonylimino(4-methyl-3,1-phenylene)carbonylimino]]bis-, tetrasodium salt 111129-54-5 (TETRA SODIUM SALT) AIDS-000976 AIDS000976 NF 063 Suramin analog