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C4555
Methyl-β-cyclodextrin
powder, BioReagent, suitable for cell culture
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1 G
1.010,00 kr.
5 G
2.350,00 kr.
10 G
4.010,00 kr.
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1 G
1.010,00 kr.
5 G
2.350,00 kr.
10 G
4.010,00 kr.
About This Item
form:
powder
Recommended Products
biological source
synthetic (organic)
Quality Level
sterility
non-sterile
product line
BioReagent
form
powder
mol wt
~1320 g/mol
extent of labeling
1.5-2.1 methyl per mol glucose
technique(s)
cell culture | mammalian: suitable
mp
180-182 °C (lit.)
solubility
H2O: 50 mg/mL
storage temp.
room temp
SMILES string
O1C2OC(C(OC3OC(C(OC4OC(C(OC5OC(C(OC6OC(C(OC7OC(C(OC8OC(C1C(C8OC)O)COC)C(C7OC)O)COC)C(C6OC)O)COC)C(C5OC)O)COC)C(C4OC)O)COC)C(C3OC)O)COC)C(C2OC)O)COC
InChI
1S/C56H98O35/c1-64-15-22-36-29(57)43(71-8)50(78-22)86-37-23(16-65-2)80-52(45(73-10)30(37)58)88-39-25(18-67-4)82-54(47(75-12)32(39)60)90-41-27(20-69-6)84-56(49(77-14)34(41)62)91-42-28(21-70-7)83-55(48(76-13)35(42)63)89-40-26(19-68-5)81-53(46(74-11)33(40)61)87-38-24(17-66-3)79-51(85-36)44(72-9)31(38)59/h22-63H,15-21H2,1-14H3
InChI key
QGKBSGBYSPTPKJ-UHFFFAOYSA-N
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General description
Methyl-β-cyclodextrin is a heptasaccharide,[1] soluble in water,[2] and has more affinity to cholesterol due to the presence of hydrophobic core.[1] Cyclodextrins are cyclic oligosaccharides consisting of 6, 7, or 8 glucopyranose units, usually referred to as α-, β-, or γ-cyclodextrins, respectively. These compounds have rigid doughnut-shaped structures making them natural complexing agents. The unique structures of these compounds owe their stability to intramolecular hydrogen bonding between the C2- and C3-hydroxyl groups of neighboring glucopyranose units. The molecule takes on the shape of a torus with the C2- and C3-hydroxyls located around the larger opening and the more reactive C6-hydroxyl aligned around the smaller opening. The arrangement of C6-hydroxyls opposite the hydrogen bonded C2- and C3-hydroxyls forces the oxygen bonds into close proximity within the cavity, leading to an electron rich, hydrophobic interior. The size of this hydrophobic cavity is a function of the number of glucopyranose units forming the cyclodextrin.
The solubility of natural cyclodextrins is very poor. In the late 1960′s, it was discovered that chemical substitutions at the 2, 3, and 6 hydroxyl sites would greatly increase solubility. Most chemically modified cyclodextrins are able to achieve a 50% (w/v) concentration in water.
The solubility of natural cyclodextrins is very poor. In the late 1960′s, it was discovered that chemical substitutions at the 2, 3, and 6 hydroxyl sites would greatly increase solubility. Most chemically modified cyclodextrins are able to achieve a 50% (w/v) concentration in water.
Application
Methyl-β-cyclodextrin has been used:
Biochem/physiol Actions
Methyl-β-cyclodextrin (MβCD) is commonly applicable as an inhibitor and modifies cholesterol domains on the cellular surface. It causes depletion of cholesterol on the membrane. It is also known to prevent the action of cholera toxin, nitric oxide (NO) synthase and glucose transporter through internalization. This is observed in specific to lipid rafts and caveolae endocytosis.[1] MβCD induces eflux as well as influx of cholesterol. It can affect cell viability as the genes regulating cholesterol levels are upregulated, due to decreased cholesterol level by the action of MβCD.[2] It can be used to increase the solubility of non-polar substances such as fatty acids, lipids, vitamins and cholesterol for use in cell culture applications. Cavity size is the major determinant as to which cyclodextrin is used in complexation. The cavity diameter of β-cyclodextrins or β-glucopyranose unit compounds is well-suited for use with molecules the size of hormones, vitamins and many compounds frequently used in tissue and cell culture applications. For this reason, β-cyclodextrin is most commonly used as a complexing agent.
Reconstitution
Solutions may be obtained by stirring 30 min at room temperature. Alternatively, sonication with cooling may be employed. Solutions may be stored for several months at 4°C. Solid should be stored tightly sealed at room temperature.
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Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
368.6 °F
Flash Point(C)
187 °C
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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Certificates of Analysis (COA)
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Articles
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What is the Department of Transportation shipping information for this product?
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How can I make a solution of Methyl-β-cyclodextrin, Product C4555?
1 answer-
This product is tested and found soluble at 50 mg/ml in 1 M NaOH yielding a clear, colorless solution. This product is also soluble in water (150 mg/ml), yielding a clear, colorless solution. Aqueous solutions may be obtained by stirring 30 minutes at room temperature. Alternatively, sonication with cooling may be employed.
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How should a solution of Methyl-β-cyclodextrin, Product C4555, be sterilized?
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Solutions can be sterile filtered using a 0.2 μm membrane. We do not recommend autoclaving the solution. The product as supplied is not sterile.
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How does Methyl-β-cyclodextrin, Product C4555, work to solubilize products that have minimal solubility in aqueous solutions for use in cell culture?
1 answer-
The cavity diameter of β -cyclodextrins compounds is well-suited for use with molecules the size of hormones, vitamins and many compounds frequently used in tissue and cell culture applications. For this reason, β-cyclodextrin is most commonly used as a complexing agent. Hydrophobic molecules are incorporated into the cavity of cyclodextrins by displacing water. This reaction is favored by the repulsion of the molecule by water. This effectively encapsulates the molecule of interest within the cyclodextrin, rendering the molecule water soluble. When the water soluble complex is diluted in a much larger volume of aqueous solvent, the process is reversed, thereby releasing the molecule of interest into the solution.
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What is the molecular weight of Methyl-β-cyclodextrin, Product No. C4555?
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The approximate molecular weight is 1320 g/mol. The molecular weight can vary from lot to lot due to variation in the methyl content of the product. The molecular weight of this product is dependent on the average number of methyl groups per glucose residue (reported on the lot specific Certificate of Analysis). View the specification sheet above.
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What concentration of Methyl-β-cyclodextrin, Product C4555, do I use to remove cholesterol from cell membranes?
1 answer-
This product has been used to reduce the cholesterol content of cell membranes at 10 - 50 mM.References:Eur J Cell Biol. 1999 Jul, 78(7): 473-84.Lipids. 1996 Aug, 31(8): 817-28.
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What is Product C4555, Methyl-β-cyclodextrin?
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Methyl-β-cyclodextrin is used as a "carrier" molecule to facilitate the dissolution of compounds with low solubility in water.
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