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2. Properties of Lactones. Generally, lactones with a simple structure are used as monomers, precursors of biodegradable polymer materials. Lactones with a more complex, polycyclic structure (macrolactones) are used in medicine, as anti-inflammatory or anti-malarial compounds as well as bioactive compounds against various diseases, …
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The effective date was January 14, 2005. As gamma-butyrolactone (GBL) was not a listed chemical when DEA initiated this regulatory action in 1998, regulation of chemical mixtures containing gamma-butyrolactone was not addressed but was the subject of a separate regulatory action. Regulations Regarding Chemical Mixtures …
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The EC Number is the numerical identifier for substances in the EC Inventory. The EC Inventory is a combination of three independent European lists of substances from the previous EU chemicals regulatory frameworks (EINECS, ELINCS and the NLP-list). More information about the EC Inventory can be found here.
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Introduction. Gamma-hydroxybutyrate (GHB) is an endogenous neurochemical. Ingestion of supra-physiological amounts can cause euphoria. This recreational use of GHB is gaining recognition and the associated acute and chronic harms can cause significant morbidity and mortality.1,2 In this narrative review, a summary of …
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WO2005030747A1 A process for the synthesis of 3-hydroxy-gamma-butyrolactone. US4111980A Process for preparing optically active phenyl glycine. JPH05310671A Production of 4-chloro-3-hydroxybutyronitrile. WO2001047856A1 Process for the recovery and recycle of d-tartaric acid.
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gamma-Butyrolactone (also known as γ-butyrolactone and commonly as GBL) is a synthetic depressant substance of the lactone chemical class that produces powerful euphoric and disinhibiting effects similar to that of alcohol intoxication. In humans it acts as a prodrug for GHB, where 1ml is equivalent to 1.66 grams of the sodium salt of GHB …
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Succinic acid can also be transformed to other useful chemicals like gamma-butyrolactone (GBL) and tetrahydrofuran (THF) by the hydrogenation process using different metal containing catalysts . 1,4-butanediol (BDO) is a well-known solvent in many industries, widely used in medical, chemical, textile, papermaking, automobile and …
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History. Patients with gamma-hydroxybutyric acid (GHB) toxicity typically present with altered mental status, making it difficult or impossible to obtain reliable history. Prehospital personnel frequently have valuable information from the scene implicating GHB as the cause of the patient's complaint. History may also be obtained from ...
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Gamma-butyrolactone has the empirical formula C 4 H 6 O 2 (Fig. 2) and molar mass of 86.09 g/mol. Its melting point is 43.5 °C and boiling point is 204 °C. GBL is synthesized industrially through dehydrogenation of 1,4-butanediol ; it can also be synthesized by oxidation of tetrahydrofuran. There are no medicinal uses for GBL. …
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Gamma-hydroxybutyric acid (GHB) and its "pro-drugs", gamma-butyrolactone (GBL) and 1,4 butanediol (1,4-BD), are drugs of abuse with depressant effects on the central nervous system. Many analytical methods have been proposed for the quantitative determination of these compounds mainly in biological matrices but only few …
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L'acide γ-hydroxybutyrique (GHB, Fig. 1) est un acide carboxylique, de la famille des acides gras à chaîne courte (4 carbones) possédant une fonction alcool en position 4 (γ) de la fonction carboxylique, à l'origine de sa dénomination [1].Chez l'homme, le GHB est naturellement formé à partir de l'acide γ-aminobutyrique (GABA Fig. 1) [1], [2].
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All TetR family regulators (TFRs) consist of an N-terminal DNA-binding domain and a larger C-terminal domain. The proteins are almost exclusively α helical and function as dimers. In most cases the C-terminal domains interact with one or more ligands, in turn altering the regulator's ability to bind DNA.
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Gamma Butyrolactone product price in India ranges from 100 to 4,595 INR and minimum order requirements from 1 to 2,00,000. Whether you're looking for Gamma-Butyrolactone, (R)-(-)-gamma-Toluenesulfonylmethyl-gamma-Butyrolactone, Gamma Terpinene Natural etc, you can explore and find the best products from Tradeindia.
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Gamma-butyrolactone (GBL) is a potent solvent which is indispensable for industrial cleaning purposes. Unlike the metabolite gamma-hydroxybutyric acid (GHB) it is not subject to restrictions under the German Narcotics Act (BtMG) and therefore easily available in internet retailing. Studies proved a physical and mental dependence potential …
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The precursors of GHB, gamma-butyrolactone (GBL) and 1,4-butanediol (1,4BD), are chemically very similar to GHB. Both of these compounds are widely used in the chemical industry, as solvents in paints and cleaning products or in the production of rubber and plastics. GBL is a component of nail varnish remover pads.
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Structure, properties, spectra, suppliers and links for: butyrolactone, GAMMA-BUTYROLACTONE, 96-48-0. Jump to main content Jump to site nav. Home; About us; Membership & professional community; Campaigning & outreach; ... butyrolactone. Molecular Formula C 4 H 6 O 2; Average mass 86.089 Da; Monoisotopic mass …
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The present invention relates to a catalyst for preparing gamma-butyrolactone by the dehydrogenation of 1, 4-butanediol, which comprises a Cu-Zn-Al oxide as a precursor and a fourth component of Pd or Pt sprayed on the surface of the precursor, wherein the unreduced catalyst precursor comprises the components by the weight …
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