1,2,4-Triazolidin-3-one, 5-thioxo-
Bicarbamimide, thio-
Bicarbamimide, 1-thio-
s-Triazol-3-ol, 5-mercapto-
5-Thioxo-1,2,4-triazolidin-3-one
3-Hydroxy-5-mercapto-1,2,4-triazole
3-Thiourazole
Monothiourazole
1,2,4-Triazolidin-5-one-3-thione
3-Hydroxy-1H-1,2,4-triazole-5-thiol