A triazine nucleoside used as an antineoplastic antimetabolite. It interferes with pyrimidine biosynthesis thereby preventing formation of cellular nucleic acids. As the triacetate, it is also effective as an antipsoriatic.

Synonyms: 2-beta-D-Ribofuranosyl-1,2,4-triazine-3,5(2H,4H)-dione, 6 Azauridine, 1,2,4-Triazine-3,5(2H,4H)-dione, 2-beta-D-ribofuranosyl-, 7BVB29RCPR, Azauridine, 6-Azauridine