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English name: D-cellbiose; D-(+)-Cellobiose; 4-beta-D-Glucopyransoyl-D-glucopyranose
Other names: Cellobiose; 4-O-β-D-glucopyranosyl-D-glucose
CAS number: 528-50-7
C12H22O11 = 342.30
Level: BR
Content: ≥98.0%
Specific optical rotation: + 33 ～ + 36º (C = 1, H2O)
Water dissolution test: qualified melting point: 239 ℃
Properties: White crystalline powder, formed from dilute ethanol, after vacuum drying contains 1/4 to 1/2 molecule of crystal water. Can reduce the Feiling's solution. Enzymatic or amygdalase will hydrolyze to produce 2 molecules of β-D-glucose. No fermentation in Saccharomyces cerevisiae, maltase or sucrase. 1g is soluble in 8ml water and 1.5ml boiling water, almost insoluble in absolute ethanol and ether. Application: Biochemical research. It is a disaccharide of the maltose type. It is composed of two molecules of dextrose and can reduce the H. van Fehling reagent. It is hydrolyzed with acid to obtain two molecules of glucose. It is a constituent unit of cellulose and is not stored in a free state in nature: RT
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