has role anticoronaviral agent dioxygen geroprotector renoprotective agent antifibrotic agent reactive oxygen species singlet dioxygen A reactive oxygen species that is the lowest excited state of the dioxygen molecule. CHEBI:26689 antiinfective agent antidepressant anxiolytic drug antipsychotic agent analgesic hypoglycemic agent antineoplastic agent vasodilator agent antihypertensive agent antifungal agent organooxygen compound anti-ulcer drug antidote gastrointestinal drug neuroprotective agent vulnerary anti-anaemic agent