6-Aza-2-thiouracil, 1,2,4-triazin-3(2H)-thion-5(4H)-one, 3-sulfanyl-1,2,4-triazin-5-ol, 5-xox-3-thio-2,3,4,5-tetrahydro-1,2,4-triazine, 5-Hydroxy-3-mercapto-1,2,4-triazine, 3-thioxo-1,2,4-triazin-5(4H)-one, 3-thioxo-2,3,4,5-tetrahydro-1,2,4-triazin-5-one, 3-thioxo-1,2,4-triazin-5-one, 2-Thio-6-azauracil, 3-Thioxo-3,4-dihydro-1,2,4-triazin-5(2H)-one, 3-thio-1,2,4-triazine-3,5(2H,4H)-dione