2H-Purin-2-one, 8-(ethylthio)-1,3,6,7-tetrahydro-1,3-dimethyl-6-thioxo-, sodium salt (9CI) 5779-05-5 8-Ethylthio-6-thiotheophylline sodium salt ETTT Theophylline, 8-(ethylthio)-6-thio-, sodium salt