Tirilazad mesylate hydrate is the hydrated form of Tirilazad mesylate, a nonglucocorticoid, 21-aminosteroid known for inhibiting lipid peroxidation. It is used to mitigate brain or spinal cord injury resulting from trauma, stroke, ischemia, and reperfusion injury and exhibits antiviral activities against nCoV. Additionally, Tirilazad mesylate is noted for its neuroprotective properties in ischemic stroke and is utilized in subarachnoid hemorrhage research [1] [2] [3].