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伽马环糊精 ,GCD, Y-环糊精,Gamma-Cyclodextrin

γ-环糊精具有比β-环糊精更大的空腔,所以空腔可包合的客体分子范围更广;更好的水溶性,室温25℃时γ-环糊精溶解度为25.6g/100ml,而α-环糊精溶解度为12.7g/100ml水、β-环糊精溶解度则只有1.88g/100ml水。应用前景比倍他环糊精更为广阔。用途:载体,香料改性剂,稳定剂。

CAS No. : 17465-86-0
说明 : Native, Neutral
级别 : 药用级 Pharma Grade
品名 : 伽马环糊精,GCD, γ-环糊精,Gamma-Cyclodextrin
产地 : 匈牙利
包装 : 1kg/袋
CHEMICAL AND PHYSICAL DESCRIPTION
Molecular FormulaC48H80O40
Formula Weight1297.2
Possible impuritiesOther cyclodextrins, linear oligomers
Solubility
(in 100 cm3 solvent, at 25 °C)
Water: > 20 g
Methanol: < 1.0 g
DMSO: > 20 g
SPECIFICATION
TestMethodRange
AppearanceVisualwhite or almost white powder
Identification A Specific optical rotation  EP 2.2.7174° - 180°
Identification B  IR EP 2.2.24complies with reference
pHEP 2.2.35.0-8.0
Reducing sugarsas in EP monographmax. 0.2%
Light-absorbing impuritiesUV-VIS EP 2.2.25A230 - A350: max. 0.10
A350 - A750: max. 0.05
Related substances
residual ACD
residual BCD
total other impurities
HPLC EP 2.2.29max. 0.5%
max. 0.5%
max. 0.5%
Sulfated ashEP 2.4.14max. 0.1%
Elemental impurtiesEP 2.4.20Cd  max. 0.2 ppm
Pb  max. 0.5 ppm
As  max. 1.5 ppm
Hg  max. 0.3 ppm
Co max. 0.5 ppm
V   max. 1 ppm
Ni  max. 2 ppmg
GCD contentHPLC EP 2.2.2997.0 - 102.0%
Loss on dryingEP 2.2.32max. 11.0%

Storage: at room temperature, in tightly closed container. 

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