Hydrafinil, also known as Fluorenol is an unregulated synthetic drug Pharmaceuticals used as an eugeroic (attentiveness advancing agent). After its synthesis, fluorenol was one of the few agents to be considered as a theoretical successor to the advanced and FDA-approved drug. Studies on animals demonstrated that fluorenol displayed approximately 39% more noteworthy eugeroic viability than modafiniI over a short-term span.
Cephalon scrapped advancement of fluorenol as a potential eugeroic.

Instead they guided their research and development in the creation of armodafiniI. ArmodafiniI, which is sold under the brand name "Nuvigil" would get to be known as the official pharmaceutical successor to ProvigiI, leaving numerous to ponder why not fluorenol?

Discussions hypothesize that fluorenol's was previously used as a bug spray in the late 1930s, and that it demonstrated lethality to aquatic life, and a lapsing Cephalon patent may have been the cause to suspend its development. Starting 2015, fluorenol has recaptured prevalence among nootropic fans and is presently being sold as an unregulated compound online under the brand name "Hydrafinil."