Suramin hexasodium salt 50mg. A P2x and P2y purinergic receptor antagonist, CAS Number: 129-46-4, Purity: G98%, Synonyms: 8,8'-[Carbonylbis[imino-3,1-phenylenecarbonylimino(4-methyl-3,1-phenylene)carbonylimino]]bis-1,3,5-naphthalenetrisulfonic acid hexasodium salt