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D-(+)-Cellobiose

Name: <SC>D</SC>-(+)-Cellobiose
Brand: SIAL

≥99.0%, suitable for microbiology, Reducing sugar disaccharide

Synonym(s):

Cellobiose, Cellose, Beta-Cellobiose, D-Cellobiose, β-D-Glc-(1→4)-D-Glc, 4-O-β-D-Glucopyranosyl-D-glucose

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About This Item

Empirical Formula (Hill Notation):

C₁₂H₂₂O₁₁

CAS Number:

528-50-7

Molecular Weight:

342.30

UNSPSC Code:

41106212

NACRES:

NA.85

PubChem Substance ID:

329752272

EC Number:

208-436-5

Beilstein/REAXYS Number:

93795

MDL number:

MFCD00136034

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Properties

Quality Segment

200

assay

≥99.0% (HPLC), ≥99.0%

form

powder

optical activity

[α]20/D +34±1°, 15 hr, c = 10% in H₂O

mol wt

342.30 g/mol

ign. residue

≤0.1% (as SO₄)

loss

≤1% loss on drying, 110 °C

mp

~235 °C (dec.), 239 °C (dec.) (lit.)

anion traces

chloride (Cl^-): ≤50 mg/kg, sulfate (SO₄^2-): ≤50 mg/kg

cation traces

As: ≤0.1 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤150 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg

application(s)

microbiology

SMILES string

OC[C@@H](O)[C@@H](O[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1O)[C@H](O)[C@@H](O)C=O

InChI

1S/C12H22O11/c13-1-4(16)7(18)11(5(17)2-14)23-12-10(21)9(20)8(19)6(3-15)22-12/h1,4-12,14-21H,2-3H2/t4-,5+,6+,7+,8+,9-,10+,11+,12-/m0/s1

InChI key

DKXNBNKWCZZMJT-WELRSGGNSA-N

Description

General description

Cellobiose is a disaccharide that is a reducing sugar. It is added to culture media as a nutrient supplement, specifically as a carbohydrate source, and can be used to differentiate bacteria based on their ability to ferment cellobiose. For example, Vibrio spp. can ferment cellobiose which results in acid production and can be indicated by the pH indicator bromothymol blue, which turns yellow at acidic pH. The addition of cellobiose in the media also stimulates the initial growth of Salmonella.

Application

Cellobiose has applications as a carbohydrate source in culture media and biochemical characterization of microorganisms, based on their carbohydrate fermentation abilities

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Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c