61339

D-Lactose monohydrate

≥99% (HPLC), BioUltra

• Synonyme(s) : β-D-Gal-(1→4)-D-Glc, 4-O-β-D-Galactopyranosyl-D-glucose, Sucre de lait
• Formule empirique (notation de Hill) : C₁₂H₂₂O₁₁ · H₂O
• Numéro CAS: 64044-51-5
• Poids moléculaire : 360.31
• UNSPSC Code: 12352201
• NACRES: NA.25
• PubChem Substance ID: 329759435
• EC Number: 200-559-2
• Beilstein/REAXYS Number: 3768231
• MDL number: MFCD00166994

Propriétés

• product line: BioUltra
• Quality Segment: 100
• assay: ≥99% (HPLC)
• form: solid
• optical activity: [α]20/D +53±1°, 22 hr, c = 10% in H₂O
• impurities: insoluble matter, passes filter test
• ign. residue: ≤0.05% (as SO₄)
• color: colorless
• pH: 3.5-6.0 (25 °C, 0.5 M in H₂O)
• solubility: H₂O: 0.5 M at 20 °C, clear, colorless
• anion traces: chloride (Cl^-): ≤50 mg/kg, sulfate (SO₄^2-): ≤50 mg/kg
• cation traces: Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 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: ≤50 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg
• λ: 0.5 M in H₂O
• UV absorption: λ: 260 nm A_max: 0.02, λ: 280 nm A_max: 0.02
• SMILES string: O.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.H2O/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;1H2/t4-,5+,6+,7+,8-,9-,10+,11+,12-;/m0./s1
• InChI key: HBDJFVFTHLOSDW-XBLONOLSSA-N

Description

Application

D-Lactose is a disaccharide of D-glucose and D-galactose units found as a major sugar in milk. D-Lactose is used for the culture of lactic acid metabolizing bacteria, lactic acid bacteria. D-Lactose is used to identify and characterized galectins.

Biochem/physiol Actions

Lactose is a dissacharide formed by the condensation of one galactose and one glucose molecule. Lactose is the major sugar in the milk of most species, typically present between 2-8%. The enzyme lactase hydrolyzes lactose to its constituent monosaccharides. In neonates, glucose released via the action of lactase is a major energy source.

Other Notes

Component of the liquid stationary phase in the GLC separation of nitroxylene and xylenol isomers

Sales restrictions may apply

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

Informations sur la sécurité

• Classe de stockage: 11 - Combustible Solids
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)