5H-Pyrrolo(3,2-d)pyrimidine-4-sulfonic acid, 7-cyano-2-phenyl-, sodium salt 7-Cyano-2-phenyl-5H-pyrrolo(3,2-d)pyrimidine-4-sulfonic acid sodium salt 84905-76-0 Sodium 2-phenyl-7-cyanopyrrolo(3,2-d)pyrimidine-4-sulfonate