9-Fluorenol-d9 (9-Hydroxyfluorene-d9) is the deuterium labeled 9-Fluorenol (HY-W016388). 9-Fluorenol (9-Hydroxyfluorene, compound 3) is a dopamine (DAT) inhibitor with IC50 value of 9 µM. 9-Fluorenol is a major metabolite of compound developed as a wake promoting agent. 9-Fluorenol shows wake promotion activity in vivo[1].