2-beta-D-Ribofuranosyl-5-thio-as-triazin-3,5(2H,4H)-dione 33782-14-8 4-Thio-6-azauridine NSC 285692 as-Triazine-3,5(2H,4H)-dione, 2-beta-D-ribofuranosyl-5-thio-