Thianthrene (Standard) is the analytical standard of Thianthrene. This product is intended for research and analytical applications. Thianthrene is a potent and orally active inhibitor of Leishmania donovani pteridine reductase 1 (PTR1). Thianthrene is a sulfur-containing tricyclic molecule distributed widely within the macro-structure of hydrocarbon fossil fuels. Thianthrene inhibits the intracellular amastigotes of Leishmania donovani (IC50 = 23 µM). Thianthrene has a moderate anthelmintic activity. Thianthrene appears to inhibit RNA function and subsequent protein production. Thianthrene can stimulate liver regeneration in vivo[1][2].