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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
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