S-3-Hydroxy-gamma-butyrolactone, also known as 3-Hydroxy-gamma-butyrolactone (3-HBL) or Gamma-Butyrolactone (GBL) is an organic compound with the chemical formula C9H8N2O3. It is a white to almost white powder to crystal that is soluble in water and alcohols. It is used in the pharmaceutical, food, and industrial industries and is also used as a solvent, plasticizer, and aperitif.


Chemical Name:

4-Hydroxyphenyl hydantoin



Molecular Fomula:


Formula Weight:


Chemical Uses


S-3-Hydroxy-gamma-butyrolactone, also known as gamma-butyrolactone, is a cyclic ester of hydroxybutyric acid, commonly used in the manufacturing of pharmaceuticals, agrochemicals and other organic compounds. It is a white to almost white powder to crystal with a pungent smell and a hydroscopic property. This compound has the chemical formula C9H8N2O3. It is a versatile compound that can be used for a variety of purposes.

Chemical Properties:

White to Almost white powder to crystal


In the pharmaceutical industry, 3-HBL is used to produce gamma-aminobutyric acid (GABA), which is a neurotransmitter in the brain. GABA plays an important role in regulating brain activity and helps to reduce anxiety. It is also used in the production of certain drugs, including benzodiazepines, barbiturates, and anticonvulsants.

In the food industry, 3-HBL can be used as a preservative and flavoring agent. It is added to beer, wine, and various soft drinks to provide a fruity flavor. It is also used in the production of various products, such as soy sauce, teriyaki sauce, and soup bases.

Chemical Properties

Chemical name:

4-Hydroxyphenyl hydantoin

Cas No:


Molecular Formula:


Formula Weight:



White to Almost white powder to crystal



Storage conditions:

Inert atmosphere,Room Temperature

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