Beta-Cyclodextrin Hydrate (68168-23-0) is Available on LEAPChem.com Now!
Nov. 2020/2/3 14:00:48 By LEAP Chem
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Basic Information of Beta-Cyclodextrin Hydrate
Chemical Name: Beta-Cyclodextrin Hydrate
Cas No.: 68168-23-0
Molecular Formula: C42H70O35
Cyclodextrins (sometimes called cycloamyloses) are a family of compounds made up of sugar molecules bound together in a ring (cyclic oligosaccharides).
Cyclodextrins are produced from starch by enzymatic conversion. They are used in food, pharmaceutical, drug delivery, and chemical industries, as well as agriculture and environmental engineering. α-Cyclodextrin is a soluble dietary fiber used as an ingredient in commercial food products.
Cyclodextrins are composed of 5 or more α-D-glucopyranoside units linked 1->4, as in amylose (a fragment of starch). The largest cyclodextrin contains 32 1,4-anhydroglucopyranoside units, while as a poorly characterized mixture, at least 150-membered cyclic oligosaccharides are also known. Typical cyclodextrins contain a number of glucose monomers ranging from six to eight units in a ring.
Because cyclodextrins are hydrophobic inside and hydrophilic outside, they can form complexes with hydrophobic compounds. Thus they can enhance the solubility and bioavailability of such compounds. Cyclodextrins can also enhance drug permeability through mucosal tissues. This is of high interest for pharmaceutical as well as dietary supplement applications in which hydrophobic compounds shall be delivered. Alpha-, beta-, and gamma-cyclodextrin are all generally recognized as safe by the FDA.
Cyclodextrins are able to form host-guest complexes with hydrophobic molecules given the unique nature imparted by their structure. As a result, these molecules have found a number of applications in a wide range of fields.
Cyclodextrins can be employed in environmental protection: these molecules can effectively immobilise inside their rings toxic compounds, like trichloroethane or heavy metals, or can form complexes with stable substances, like trichlorfon (an organophosphorus insecticide) or sewage sludge, enhancing their decomposition.
This ability of forming complexes with hydrophobic molecules has led to their usage in supramolecular chemistry. In particular they have been used to synthesize certain mechanically interlocked molecular architectures, such as rotaxanes and catenanes, by reacting the ends of the threaded guest. The photodimerization of substituted stilbazoles has been demonstrated using g-cyclodextrin as a host. Based on the photodimer obtained, it is established that the halogen-halogen interactions, which play an interesting role in solid state, can be observed in solution. Existence of such interactions in solution has been proved by selective photodimerization of dichloro substituted stiblazoles in Cyclodextrin and Cucurbiturils.
The application of cyclodextrin as supramolecular carrier is also possible in organometallic reactions. The mechanism of action probably takes place in the interfacial region. Wipff also demonstrated by computational study that the reaction occurs in the interfacial layer. The application of cyclodextrins as supramolecular carrier is possible in various organometallic catalysis.
In 2013, α-cyclodextrin is found to be able to selectively form second-sphere coordination complex with tetrabromoaurate anion from transition-metal anion mixtures, and thus is used to selectively recover gold from various gold-bearing materials in an environmentally benign manner.
β-cyclodextrins are used to produce HPLC columns allowing chiral enantiomers separation, and are also the main ingredient in Febreze which claims that the β-cyclodextrins "trap" odor causing compounds, thereby reducing the odor.
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