D-Lactose monohydrate
SIGMA/61339 - ≥99% (HPLC), BioUltra
Synonym: β-D-Gal-(1→4)-D-Glc; 4-O-β-D-Galactopyranosyl-D-glucose; Milk sugar
CAS Number: 64044-51-5
Empirical Formula (Hill Notation): C12H22O11 · H2O
Molecular Weight: 360.31
EC Number: 200-559-2
MDL Number: MFCD00166994
Linear Formula: C12H22O11 · H2O
Product Type: Chemical
| λ | 0.5 M in H2O |
| anion traces | chloride (Cl-): ≤50 mg/kg |
| sulfate (SO42-): ≤50 mg/kg | |
| assay | ≥99% (HPLC) |
| 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 | |
| color | colorless |
| form | solid |
| ign. residue | ≤0.05% (as SO4) |
| impurities | insoluble matter, passes filter test |
| InChI | 1S/C12H22O11.H2O/c13-1-4( |
| InChI key | HBDJFVFTHLOSDW-XBLONOLSSA |
| optical activity | [α]20/D +53±1°, 22 hr, c = 10% in H2O |
| pH | 3.5-6.0 (25 °C, 0.5 M in H2O) |
| product line | BioUltra |
| Quality Level | 100  |
| SMILES string | O.OC[C@@H](O)[C@@H](O[C@@ |
| solubility | H2O: 0.5 M at 20 °C, clear, colorless |
| UV absorption | λ: 260 nm Amax: 0.02 |
| λ: 280 nm Amax: 0.02 |
| 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 |
| Other Notes: | Sales restrictions may apply |
| Other Notes: | To gain a comprehensive understanding of our extensive range of Disaccharides for your research, we encourage you to visit our Carbohydrates Category page. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥99% (HPLC) |
| UNSPSC | 12352201 |