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Бета-циклодекстрин гидра
- английское имяbeta-Cyclodextrin hydrate
- CAS №68168-23-0
- CBNumberCB3270383
- ФормулаC42H70O35
- мольный вес1134.98
- EINECS231-493-2
- номер MDLMFCD00150811
- файл Mol68168-23-0.mol
химическое свойство
Температура плавления | >260 °C (dec.)(lit.) |
альфа | 161 º (c=1, H2O 25 ºC) |
температура хранения | Refrigerator |
растворимость | Water (Slightly) |
форма | Crystalline Powder |
цвет | White |
оптическая активность | [α]20/D +142°, c = 1 in H2O (Dry basis) |
Растворимость в воде | 18.5 g/L (25 ºC) |
Мерк | 14,2718 |
БРН | 5915513 |
Заявления о безопасности | 24/25 | |||||||||
WGK Германия | 2 | |||||||||
RTECS | GU2293000 | |||||||||
TSCA | Yes | |||||||||
кода HS | 35051000 | |||||||||
NFPA 704: |
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Бета-циклодекстрин гидра химические свойства, назначение, производство
Описание
β-Cyclodextrin (β-CD) is a cyclic oligosaccharide that contains seven D-(+)-glucopyranose units and has been used to improve the aqueous solubility of various compounds, especially those containing a phenyl group. The circular arrangement of its glucose units produces a torus-shaped ring configuration in which the CH2 groups and ether linkages of the molecule face the hollow interior, resulting in a nonpolar, hydrophobic cavity and a polar, hydrophilic exterior. When combined in solution with other compounds, the nonpolar aromatic portions of that compound interact with the nonpolar interior of the β-CD molecule, thus isolating the aromatic portion of the molecule from the water and thereby increasing its aqueous solubility.Химические свойства
white crystalline powderИспользование
beta-Cyclodextrin hydrate forms clathrates. Produces a water-soluble complex with dansyl chloride for the fluorescent labeling of proteins. It is used in pharmaceutical research, as pharmaceutical intermediates and also as chemical reagents.Общее описание
β-cyclodextrin (β-CD), a well-known macrocyclic oligosaccharide member of the CD family, is composed of seven D-glucose units connected via α(1→4) glycosidic bonds. Its ability to form several inclusion complexes with organic as well as inorganic compounds makes it a potential candidate in solid and solution state determinations.Методы очистки
Recrystallise β-cyclodextrin from water and dry it for 12hours in a vacuum at 110o, or 24hours in a vacuum at 70o. The purity is assessed by TLC on cellulose containing a fluorescent indicator. [Taguchi, J Am Chem Soc 108 2705 1986, Tabushi et al. J Am Chem Soc 108 4514 1986, Orstam & Ross J Phys Chem 91 2739 1987.] [Beilstein 19 IV 6287, 19/12 V 801.]Бета-циклодекстрин гидра поставщик
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