Dimethyl-β-Cyclodextrin

Molecular Structure：

MDL：
MFCD00074980

Molecular Formula：
C56H98O35

Molecular Weight：
1331.39

Alias：
Methyl-beta-cyclodextrin

Product order：

Name	Specifications	Packing	Price	Delivery
Dimethyl-β-Cyclodextrin	98%	25g	RMB 506	Consulting service
Dimethyl-β-Cyclodextrin	98%	100g	RMB 1408	Consulting service
Dimethyl-β-Cyclodextrin	average Mn 1310	100g	RMB 1518	Consulting service
Dimethyl-β-Cyclodextrin	average Mn 1310	25g	RMB 616	Consulting service
Dimethyl-β-Cyclodextrin	average Mn 1310	5g	RMB 250.8	Consulting service

Character：
溶于甲醇、丙酮、吡啶和二甲基亚砜
Bulk density ~ 0.2 – 0.3 g/ml
Melting range: 160 – 190 °C (decomp)

Quality Standard：
Average mol. wt: ~ 1310

外观Appearance                          白色粉末
红外光谱鉴别Infrared spectrometry       Conforms
核磁Proton NMR spectra                  Conforms
熔点Melting point                       160°C - 190°C
水溶解试验solubility in water           合格，> 200 g in 100 ml at 25°C
比旋光度Specific rotation [a]20/D       + 164 +/- 3°(C=5%, H2O)
取代度Degree of substitution (per anhydro glucose unit): 1.7 – 1.9
Optical density of a 10% solution: 0.1 max. (350-600 nm); 1.0 max. (220-350 nm)
还原物质Reducing compounds              <0.5 %(determined as dextrose)
β-环糊精β-Cyclodextrin:                 ≤0.1%
残留溶剂Residual solvents Methanol      < 0.005%
甲基氯methyl chloride                   < 1 ppm
氯Chloride:                             ≤500 ppm
重金属Heavy metals:                     ≤10 ppm
干燥损失Loss on drying:                 ≤5.0 %
灼烧残渣Residue on ignition (sulphated ash):≤0.1%

外观Appearance                          白色粉末
红外光谱鉴别Infrared spectrometry       和对照品匹配
纯度Purity                              ≥98% (GC)
比旋光度Specific rotation [a]20/D       +160.0 ～ +167.0°(C=1.5, H2O)
干燥损失loss on drying                  ≤5%
取代度Degree of substitution (NMR)      1.7 ～ 1.9

Storage：

用途增加非极性物质的溶解性，如脂肪酸、脂类、维生素和胆固醇，用于细胞培养中