Gamma-Hydroxyvaleric acid
γ-Hydroxyvaleric acid, also known as 4-methyl-GHB, is a designer drug related to γ-hydroxybutyric acid. It is sometimes seen on the grey market as a legal alternative to GHB, but with lower potency and higher toxicity, properties which have tended to limit its recreational use.
γ-Valerolactone acts as a prodrug to GHV, analogously to how γ-butyrolactone is a prodrug to GHB.
