(2,3,4,5-Tetrahydro)-3-thioxo-2-(beta-D-ribofuranosyl)-1,2,4-triazin-5-one 2-Thio-6-azauridine 27089-56-1 EINECS 248-218-7 NSC 146268 as-Triazine-3,5(2H,4H)-dione, 2-beta-D-ribofuranosyl-3-thio-