D4626

Dextran from Leuconostoc mesenteroides

average mol wt 15,000-30,000

• Formula condensata: (C₆H₁₀O₅)_n
• Numero CAS: 9004-54-0
• Numero CE: 232-677-5
• Numero MDL: MFCD00130935
• Codice UNSPSC: 12352201
• NACRES: NA.25

Proprietà

• Origine biologica: bacterial (Leuconostoc mesenteroides)
• Livello qualitativo: 200
• Forma fisica: powder
• Attività ottica: [α]/D 199°
• PM: average mol wt 15,000-30,000
• Colore: white
• Solubilità: water: 20 mg/mL, clear, colorless to faintly yellow
• InChI: 1S/C18H32O16/c19-1-5(21)9(23)10(24)6(22)3-31-17-16(30)14(28)12(26)8(34-17)4-32-18-15(29)13(27)11(25)7(2-20)33-18/h1,5-18,20-30H,2-4H2; FZWBNHMXJMCXLU-UHFFFAOYSA-N

Descrizione

Descrizione generale

Dextran is a branched glucan composed of linear α(1→6) linked glucose units and α (1→3) link initiated branches. Dextran ranges in size from 10,000 to 150,000 kDa.

Applicazioni

Dextrans are used in many applications as volume extenders, osmotic pressure regulators, stabilizers, matrix components, copolymers, microcarriers, binding agents, viscosity modifiers, antithrombotics, lubricants and physical structure components. Dextrans may be used as long hydrophilic spacer arms to improve the performance (freedom of movement) of conjugated/bound proteins. Dextrans may be derivatized for use in biosensor systems. Dextrans of less than 60,000 kDa are generally considered low molecular weight dextrans. Low molecular weight dextrans are often preferred versus high molecular weight dextrans due to their viscosities, aggregation and permeation properties. High molecular weight, water-soluble, dextran polymers have been used in a wide variety of biomedical applications. Dextran (15,000-30,000), a low molecular weight dextran, may be used to study processes such as transient plasma membrane permeabilization. Dextran (15,000-30,000), may be used as a sugar based crowding agent in protein packing and folding studies.

Use of dextrans as long and hydrophilic spacer arms improves the performance of immobilized proteins acting on macromolecules.

Nota sulla preparazione

With the exception of the highest MW dextran, D5501 (MW range = 5 million to 40 million), dextrans are very water soluble. Sigma tests the solubility of dextrans at concentrations generally exceeding 30 mg/ml in water. Dextrans are also freely soluble in DMSO, formamide, ethylene glycol, and glycerol. Neutral-aqueous dextran solutions can be sterilized by autoclaving at 110-115^oC for 30 to 45 minutes. Dextran can be hydrolyzed by strong acids at high temperatures. The terminal reducing end group of dextran can be oxidized in alkaline solutions.

Altre note

To gain a comprehensive understanding of our extensive range of Dextrans for your research, we encourage you to visit our Carbohydrates Category page.

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): WGK 2
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable
• Dispositivi di protezione individuale: Eyeshields, Gloves, type N95 (US)