γ-cyclodextrin

γ-cyclodextrin has greater cavity than b-cyclodextrin, the cavity may include a wider range of subject molecules; it has better water solubility , the water solubility of γ-cyclodextrin is 25.6g/ 100ml at temperature of25 ℃, while the solubility of α-cyclodextrin is12.7g/100ml in water and the water solubility of b-cyclodextrin is only1.88g/100ml. γ-cyclodextrin has a broader application than the b-cyclodextrin.

Specification：over 98% Art NO. ACJ0004A

【γ-cyclodextrin parameters】：

Items	Specification
Number of glucose units	8
Molecular	1297
Solubility in water g/100ml at ambient temp.	23.2
[α]_D²⁵	177.4±0.5
Cavity diameter Å	7.5-8.3
Height of torus	7.9±0.1
Dia. of periphery	17.5±0.4
Vol. of cavity(approx.)Å	472
Cavity vol (approx.): per mol CD. mls	265
per lg CD mls	0.20
Crystal forms（from water）	Quadratic prisms
Crystallographic params. C₁-C₄-C₄ angle	112.6
φ/φº	165/-169
O₄---O₄ distance Å	4.48
O₂---O₃distance Å	2.31
Crystal water wt%	8.13-17.7
Diffusion const.40ºC	3000
Hydrolysis by A. oryzae α-amylase	Rapid
V_maxvalue min^-1	2300
Relative permittivity	70.0
Pk (by potentionmetry) 25ºC	39.5
Partial molar volumes in solution ml/mol	12.081
Adiabatic compressidbility	801.2
In aqueous soln.ml.mol^-1.bar^-1.10⁴	-5.0

【Package and storage】：

Packing: 500 grams / bag,1 kg/bag,2 kg/bag,10 kg/barrel
Storage: It should be sealed to store in a dry and cool place.

【γ-cyclodextrin Application】：
γ-cyclodextrin is mainly used in medicine, R&D industries etc, in chemistry industry γ- cyclodextrin is a valuable chemical reagents. When there is it, the fluorescence intensity of fluorchrome increases significantly, so it can be used for analysis of protein and amino acid; It also can be used to separate long-chain organic compounds and raceme etc. Further more, adsorbent made of cyclodextrin can be used in adsorption of chromatography. It also can be used as a complexing agent and tissue culture agent, it can be used in enzyme activity studies.

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