55803-45-7 Benzenesulfonic acid, 4-bromo-, compd. with (3aS-(3a-alpha,4-alpha,10aR*))-2,6-diamino-4-(((aminocarbonyl)oxy)methyl)-3a,4,8,9-tetrahydro-1H,10H-pyrrolo(1,2-c)purine-10,10-diol (2:1) Saxitoxin p-bromobenzenesulfonate