D-cellobiose / cellobiose /4-o- β- D-glucopyranosyl-d-glucose /4- β- D-glucopyranosyl-d-glucose
Item No.： C0028
Store at： RT
English name：D-cellbiose；D-(+)-Cellobiose；4-beta-D-Glucopyransoyl-D-glucopyranose
Other names: cellobiose; 4-O- β- D-glucopyranosyl-d-glucose; Cellulose disaccharide; 4- β- D-glucopyranosyl-d-glucose
CAS No.: 528-50-7
C12H22O11=342.30
Grade: br
Content: ≥ 98.0%
Specific rotation: +33 ~ +36 o (c=1, H2O)
Water dissolution test: qualified
Melting point: 235 ~ 240 ℃
Physicochemical properties: white crystalline powder, formed from dilute ethanol, containing 1/4 to 1/2 molecules of crystalline water after vacuum drying. It can reduce ferring's solution. In case of acid or bitter almond enzyme, it will hydrolyze to form 2 molecules β- D-glucose. It is not fermented in Saccharomyces cerevisiae, maltase or sucrase. 1g is soluble in 8ml water and 1.5ml boiling water, and almost insoluble in absolute ethanol and ether
Purpose: biochemical research. A disaccharide of maltose type. It is composed of two molecules of dextrose, which can reduce h.van Fehling reagent and hydrolyze it with acid to obtain two molecules of glucose. It is a constituent unit of cellulose and does not exist in free state in nature
Save: RT
