Cyclodextrin

Cyclodextrin, also called amylopectin, is a kind of oligosaccharide formed by the action of glucosyltransferase on starch. which is a compound that are formed by cyclic linkage of 6 to 8 molecules of D-glucose using alpha -1 and 4 bonds. Composed by 6 molecule glucose is calledα- cyclodextrin(α-CD), composed by 7 molecule glucose is called β-cyclodextrin (β-CD), and composed by 8 molecule glucose is calledγ- cyclodextrin (γ-CD). There are also composed by 9 to 10 glucose molecules. Cyclodextrin is a crystal, with a cylindrical structure, in the upper part of the cylinder (wide mouth) link –OH, in the bottom of the cylinder (the throat side) connected with a CH2OH base, so, as a whole cyclodextrin molecule is hydrophilic and soluble in water, and accordingly, it is hydrophobic within the cyclodextrin (inside the cylinder). Since it is ring-shaped, it does not have a reducing end. The cyclodextrin has certain stability to the acid, and it is difficult for ordinary amylase to hydrolysis. Various cyclodextrins and iodine color reaction is different. Specific rotation and solubility are not the same. The solubility ofβ- cyclodextrin is the smallest, the most easy to crystallize, and the most easy to separate. Because of its molecular cavity has a cavity, the diameter between 7 ~ 10A °, and the attracting effect of the intermolecular van Edward force can cause some gas, liquid or solid molecules to enter the cavity path to form the inclusion compound. Therefore, when the formation of inclusion compounds with traditional Chinese medicine, it can play a role in improving drug properties, improve drug stability, reduce side effects, increase bioavailability and so on. Such as naoliqing tablets contains a lot of borneol and mint, which are melted into viscous liquid, so that tablets is not qualified. There is no common melting phenomenon after the use of β-CD, so as to make the tablet quality meet the requirements.

Cyclodextrin is also a surfactant, can be used for food, as a stabilizer, can eliminate and cover special smell; improve food tissue structure; reduce and remove the bitter taste; antioxidant; envelope flavor, make it less volatile, the lasting fragrance; envelope edible pigment, make its stability; enhance the foaming effect of protein and so on; can be used for aquatic products, animal products, ice cream, sauces, dairy products. According to the size of the cyclodextrin hole, it can coordinate the cation with the same ionic radius, which can be used as phase transfer catalyst, analytical reagent and medicine. The envelope function of cyclodextrin is also applied to the pesticide, reduce the decomposition of pesticide, improve the efficacy, and used as emulsifier, deodorant and preservative for cosmetics, detergent for washing powder, and has a certain medical effect on acne.

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Structure Chemical Name CAS MF
Hydroxypropyl-beta-cyclodextrin Hydroxypropyl-beta-cyclodextrin 94035-02-6 C54H102O39
(2-Hydroxypropyl)-γ-cyclodextrin (2-Hydroxypropyl)-γ-cyclodextrin 128446-34-4 C48H80-nO40.(C3H7O)n
5,5'-isopropylidenebis(m-xylene-2,alpha,alpha'-triol) 5,5'-isopropylidenebis(m-xylene-2,alpha,alpha'-triol) 3957-22-0 C19H24O6
1,2,4,5-Tetrakis(4-carboxyphenyl)benzene 1,2,4,5-Tetrakis(4-carboxyphenyl)benzene 1078153-58-8 C34H22O8
HYDROXYETHYL BETA-CYCLODEXTRIN HYDROXYETHYL BETA-CYCLODEXTRIN 128446-32-2 C56H98O42
ALPHA-CYCLODEXTRIN HYDRATE ALPHA-CYCLODEXTRIN HYDRATE 51211-51-9 C36H62O31
Mono-6-O-(p-toluenesulfonyl)-beta-cyclodextrin Mono-6-O-(p-toluenesulfonyl)-beta-cyclodextrin 67217-55-4 C49H76O37S
TRIMETHYL-BETA-CYCLODEXTRIN TRIMETHYL-BETA-CYCLODEXTRIN 55216-11-0 C63H112O35
Betadex Sulfobutyl Ether Sodium Betadex Sulfobutyl Ether Sodium 182410-00-0 C42H70O35
MONO-2-O-(P-TOLUENESULFONYL)-GAMMA-CYCLODEXTRIN MONO-2-O-(P-TOLUENESULFONYL)-GAMMA-CYCLODEXTRIN 97227-32-2 C55H86O42S
MONO-6-O-MESITYLENESULFONYL-GAMMA-CYCLODEXTRIN MONO-6-O-MESITYLENESULFONYL-GAMMA-CYCLODEXTRIN 174010-62-9 C57H90O42S
3A-Amino-3A-deoxy-(2AS,3AS)-alpha-cyclodextrin Hydrate 3A-Amino-3A-deoxy-(2AS,3AS)-alpha-cyclodextrin Hydrate 121916-94-7 C36H61NO29
POLY-BETA-CYCLODEXTRIN POLY-BETA-CYCLODEXTRIN
3A-Amino-3A-deoxy-(2AS,3AS)-gamma-cyclodextrin Hydrate 3A-Amino-3A-deoxy-(2AS,3AS)-gamma-cyclodextrin Hydrate 189307-64-0 C48H81NO39
MONO-2-O-(P-TOLUENESULFONYL)-ALPHA-CYCLODEXTRIN MONO-2-O-(P-TOLUENESULFONYL)-ALPHA-CYCLODEXTRIN 93184-10-2 C43H66O32S
HYDROXYPROPYL-GAMMA-CYCLODEXTRIN HYDROXYPROPYL-GAMMA-CYCLODEXTRIN 99241-25-5 C72H128O48
MONO-6-O-(P-TOLUENESULFONYL)-GAMMA-CYCLODEXTRIN MONO-6-O-(P-TOLUENESULFONYL)-GAMMA-CYCLODEXTRIN 97227-33-3 C55H86O42S
2-hydroxypropyl-α-cyclodextrin 2-hydroxypropyl-α-cyclodextrin 128446-33-3
Piroxicambeta-Cyclodextrin Piroxicambeta-Cyclodextrin 121696-62-6 C57H83N3O39S
SBE7-beta-CD SBE7-beta-CD 194615-04-8
HEXAKIS-6-IODO-6-DEOXY-ALPHA-CYCLODEXTRIN HEXAKIS-6-IODO-6-DEOXY-ALPHA-CYCLODEXTRIN 131105-41-4 C36H54I6O24
OCTAKIS-6-(DIMETHYL-TERT-BUTYLSILYL)-GAMMA-CYCLODEXTRIN OCTAKIS-6-(DIMETHYL-TERT-BUTYLSILYL)-GAMMA-CYCLODEXTRIN 123155-06-6 C96H192O40Si8
monochlorotriazinyl--cyclodextrin monochlorotriazinyl--cyclodextrin 187820-08-2
piroxicam-beta-cyclodextrin piroxicam-beta-cyclodextrin 96684-39-8 C57H83N3O39S
Sodium Sulphobutylether-Beta-Cyclodextrin Sodium Sulphobutylether-Beta-Cyclodextrin
α-Cyclodextrin, sulfated sodium salt α-Cyclodextrin, sulfated sodium salt 699020-02-5 C36H62O34S
CYCLODEXTRIN CYCLODEXTRIN 12619-70-4
Heptakis-O-(4-sulfobutyl)-beta-Cyclodextrin Heptakis-O-(4-sulfobutyl)-beta-Cyclodextrin 165133-56-2 C46H80O39S
CARBOXYMETHYL BETA-CYCLODEXTRIN CARBOXYMETHYL BETA-CYCLODEXTRIN 218269-34-2 C56H84O49
β-Cyclodextrin inclusion complex β-Cyclodextrin inclusion complex
6-O-ALPHA-D-GLUCOSYL-ALPHA-CYCLODEXTRIN MONO 6-O-ALPHA-D-GLUCOSYL-ALPHA-CYCLODEXTRIN MONO 10058-19-2 C42H70O35
CYCLODEXTRIN CYCLODEXTRIN 85220-53-7 C54H90O45
OCTAKIS-6-IODO-6-DEOXY-GAMMA-CYCLODEXTRIN OCTAKIS-6-IODO-6-DEOXY-GAMMA-CYCLODEXTRIN 168296-33-1 C48H72I8O32
Glucose powder BP98 BP2000 USP24,25 Glucose powder BP98 BP2000 USP24,25 C6H12O6
(2-Hydroxy-3-N,N,N-trimethylamino)propyl ^b-cyclodextrin chloride hydrate (2-Hydroxy-3-N,N,N-trimethylamino)propyl ^b-cyclodextrin chloride hydrate
HEPTAKIS-6-BROMO-6-DEOXY-BETA-CYCLODEXTRIN HEPTAKIS-6-BROMO-6-DEOXY-BETA-CYCLODEXTRIN 53784-83-1 C42H63Br7O28
Alprostadil alfadex Alprostadil alfadex 55648-20-9 C56H94O35
HEPTAKIS-6-IODO-6-DEOXY-BETA-CYCLODEXTRIN HEPTAKIS-6-IODO-6-DEOXY-BETA-CYCLODEXTRIN 30754-23-5 C42H63I7O28
HEXAKIS-6-(DIMETHYL-TERT-BUTYLSILYL)-ALPHA-CYCLODEXTRIN HEXAKIS-6-(DIMETHYL-TERT-BUTYLSILYL)-ALPHA-CYCLODEXTRIN 118646-79-0 C72H144O30Si6
2,6-DI-O-METHYL-ALPHA-CYCLODEXTRIN 2,6-DI-O-METHYL-ALPHA-CYCLODEXTRIN 51166-72-4 C48H84O30
(2-HYDROXYPROPYL)-ALPHA-CYCLODEXTRIN (2-HYDROXYPROPYL)-ALPHA-CYCLODEXTRIN 99241-24-4 C54H96O36
HEPTAKIS-6-(DIMETHYL-TERT-BUTYLSILYL)-BETA-CYCLODEXTRIN HEPTAKIS-6-(DIMETHYL-TERT-BUTYLSILYL)-BETA-CYCLODEXTRIN 123155-03-3 C84H168O35Si7
Cyclodextrin glucanotransferase Cyclodextrin glucanotransferase
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