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
• Numéro Beilstein : 3768231
• Numéro CE : 200-559-2
• Numéro MDL: MFCD00166994
• Code UNSPSC : 12352201
• ID de substance PubChem : 329759435
• Nomenclature NACRES : NA.25

Propriétés

• Gamme de produits: BioUltra
• Niveau de qualité: 100
• Pureté: ≥99% (HPLC)
• Forme: solid
• Activité optique: [α]20/D +53±1°, 22 hr, c = 10% in H₂O
• Impuretés: insoluble matter, passes filter test
• Résidus de calcination: ≤0.05% (as SO₄)
• Couleur: colorless
• pH: 3.5-6.0 (25 °C, 0.5 M in H₂O)
• Solubilité: H₂O: 0.5 M at 20 °C, clear, colorless
• Traces d'anions: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• Traces de cations: 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
• Absorption UV: λ: 260 nm A_max: 0.02; λ: 280 nm A_max: 0.02
• Chaîne SMILES: 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
• Clé InChI: 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.

Actions biochimiques/physiologiques

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.

Autres remarques

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

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

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Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Gloves, type N95 (US)