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阿尔法环糊精,Alpha-Cyclodextrin,α-环糊精,α-Cyclodextrin

α-环糊精主要用于注射用制剂。然而,由于其空腔是环糊精中最小的,因此,只能与相对较少的小尺寸的分子形成包合物。 用途:纤维补充给药法;香料的载体(香料的佐药);载体;稳定剂或者增溶剂;维他命和脂肪酸;改善饮料中的口感。 禁忌:水溶液中,环糊精的存在可能导致有些抗菌防腐剂的活性降低。 储存条件:避免高湿条件,阿法环糊精在固态状态下稳定,但环糊精应保存在严封容器内,在阴凉、干燥处贮存。

CAS No. : 10016-20-3
说明 : Native, Neutral
级别 : 药用级 Pharma Grade
品名 : α-环糊精,α-Cyclodextrin, ACD,Alpha-Cyclodextrin
产地 : 匈牙利
包装 : 1kg/袋
CHEMICAL AND PHYSICAL DESCRIPTION
Molecular FormulaC36H60O30
Formula Weight972.9
Possible impuritiesOther cyclodextrins, linear oligomers
Solubility
(in 100 cm3 solvent, at 25 °C)
Water: > 10 g
Methanol: < 1.0 g
DMSO: > 10 g
SPECIFICATION
TestMethodRange
AppearanceVisualwhite or almost white powder
Identification A: Specific optical rotationEP 2.2.7+147° to +152°
Identification B: HPLCEP 2.2.29conforms with reference
Identification C: Iodine test
yellow-brown precipitate
Appearance of 1% aqueous solutionVisual (EP 2.2.1)clear solution
pH of 1% aqueous solutionEP 2.2.35.0 - 8.0
Related substances
residual BCD
residual GCD
sum of other impurities
HPLC (EP 2.2.29)
max. 0.25%
max. 0.25%
max. 0.50%
Reducing sugars
max 0.2%
Heavy metalsEP 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 ppm
Light absorbing impurities (1%)EP 2.2.25A230-A350: max 0.10
A350-A720: max 0.05
Sulphated ashEP 2.4.14max. 0.1%
ACD contentHPLC (EP 2.2.29)97.0 - 102.0%
Microbial contaminationEP 2.6.12, EP 2.6.13TAMC: max. 103 CFU/g
TYMC: max. 102 CFU/g
Salmonella: absent/10 g
E. Coli: absent/1 g
Loss on dryingEP 2.2.32max. 11.0%

Storage: at room temperature, in tightly closed container. 

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