99% Purity Solvents Liquid Gamma Butyrolactone GBL Drug Colorless CAS 202-509-5

Synonyms: 1-Oxacyclopentan-2-one;2(3H)-dihydrofuranone;2(3H)-Furanone, dihydro-;2(3H)-furanone,dihydro-;2,3,4,5-tetrahydro-2-furanone;2-Oxolanone;2-Oxotetrahydrofuran;3-Hydroxybutyric acid lactone; butyrolactone;,

Molecular formula: C4H6O2
Molecular weight: 86.09
EINECS: 202-509-5
Melting point: -45degree
Appearence: colorless liquid
Application: used as intermediate of indolebutyric acid, and also can be used as industrial dissolvent, diluent or curing agent.

Gamma Butyrolactone ( GBL ) Description:

Gamma-Butyrolactone (γ-butyrolactone or GBL) is a hygroscopic colorless liquid with a weak characteristic odor which is soluble in water. GBL is a common solvent and reagent in chemistry as well as being used as a flavouring, as a cleaning solvent, as a superglue remover, and as a solvent in some wet aluminium electrolytic capacitors. In humans it acts as a prodrug for GHB, and it is used as a recreational intoxicant with effects similar to alcohol.

GBL has been found in extracts from samples of unadulterated wines.[3] This finding indicates that GBL is a naturally occurring component in some wines and may be present in similar products. The concentration detected was approximately 5 μg/mL and was easily observed using a simple extraction technique followed by GC/MS analysis. GBL can be found in cheese flavourings but typically results in a content of 0.0002% GBL in the final foodstuff.

GBL is a lactone. It is hydrolyzed under basic conditions, for example in a sodium hydroxide solution into sodium gamma-hydroxybutyrate, the sodium salt of gamma-hydroxybutyric acid. Under acidic conditions it forms an equilibrium mixture of both compounds. These compounds then may go on to form a polymer. When treated with a non-nucleophilic base, like lithium diisopropylamide, GBL can become an alpha-carbon nucleophile. The related compound caprolactone can be used to make a polyester in this manner.

GBL is not active in its own right; its mechanism of action stems from its identity as a prodrug of GHB.

The hypnotic effect of GHB is enhanced by combination with alcohol. A 2003 rat study showed that GBL in combination with ethanol showed a potentiated hypnotic effect, as the sleep-timing measure was longer than both of the individual components combined

GBL is rapidly converted into GHB by paraoxonase (lactonase) enzymes, found in the blood.[7][8] Animals which lack these enzymes exhibit no effect from GBL.[7] GBL is more lipophilic (fat soluble) than GHB, and so is absorbed faster and has higher bioavailability. Because of these pharmacokinetic differences, GBL tends to be more potent and faster-acting than GHB, but has a shorter duration; whereas the related compound 1,4-butanediol (1,4-B) tends to be slightly less potent, slower to take effect but longer-acting than GHB.