.beta.-D-Galactopyranose
- CAS No.
- 7296-64-2
- Chemical Name:
- .beta.-D-Galactopyranose
- Synonyms
- β-D-Galactose;-β-D-Galactose;β-D-galactopyranose;.beta.-D-Galactopyranose;(2R,3R,4S,5S,6R)-6-(hydroxymethyl)oxane-2,3,4,5-tetrol;(2R,3R,4S,5R,6R)-6-(hydroxymethyl)tetrahydro-2H-pyran-2,3,4,5-tetraol
- CBNumber:
- CB31208989
- Molecular Formula:
- C6H12O6
- Molecular Weight:
- 180.16
- MOL File:
- 7296-64-2.mol
- MSDS File:
- SDS
- Modify Date:
- 2023/4/23 13:52:06
| Melting point | 179-179.5 °C |
|---|---|
| Boiling point | 410.8±45.0 °C(Predicted) |
| Density | 1.732±0.06 g/cm3(Predicted) |
| storage temp. | Hygroscopic, Refrigerator, under inert atmosphere |
| solubility | Water (Slightly) |
| form | Solid |
| pka | 12.12±0.70(Predicted) |
| color | White to Off-White |
| Stability | Hygroscopic |
.beta.-D-Galactopyranose Chemical Properties,Uses,Production
Uses
β-D-Galactose s the beta anomer of D-Galactose (G155250), the C-4 epimer of Glucose (G595000). D-Galactose is found in milk and sugar beets as well as being synthesized by the body.
Definition
ChEBI: A D-galactopyranose having beta-configuration at the anomeric centre.
Purification Methods
D-Galactose (40g) is dissolved in hot H2O to establish the equilibrium of and anomers; then the solution is cooled to 0o and poured into absolute EtOH (500mL). Stir vigorously and crystallisation occurs within a few minutes, and more rapidly if seeded, filter the crystals immediately (7g, [] D 20 +65o (initial, c 4 in H2O). This mixture of and anomers is further separated by dissolving in an equal weight of cold H2O, filtering and adding to ice cold absolute EtOH (250mL) and stirring for 1minute when crystals separate, then filter them off. After two such crystallisations, the initial [] D 20 is +53o. This can be further purified by shaking with 80% EtOH for 2minutes, filtering, washing with EtOH and Et2O, and drying in a vacuum desiccator to give -Dgalactose (15g) with m 167o, [ ] D 20 +52o (initial, c 4 in H2O) mutarotating to +80.4o. Acetylation of Dgalactose with hot NaOAc/Ac2O gives -D-galactopyranoside pentaacetate m 1 4 2o, [ ] D 25 +25 (c 4 in CHCl3). [Wolfrom & Thompson Methods in Carbohydrate Chemistry I 120 1962, Academic Press, Beilstein 1 IV 4336.]
.beta.-D-Galactopyranose Preparation Products And Raw materials
Raw materials
Preparation Products
.beta.-D-Galactopyranose Suppliers
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| CLEARSYNTH LABS LTD. | +91-22-45045900 | Hyderabad, India | 6351 | 58 | Inquiry |
| BOC Sciences | +1-631-485-4226 | United States | 19553 | 58 | Inquiry |
| Aladdin Scientific | +1-+1(833)-552-7181 | United States | 57511 | 58 | Inquiry |
| Watson Biotechnology Co.,Ltd | +86-18186686046 +86-18186686046 | China | 5815 | 58 | Inquiry |
| Shanghai Saikerui Biotechnology Co. , Ltd. | 021-58000709 15900491054 | China | 9268 | 58 | Inquiry |
| Shanghai Aladdin Biochemical Technology Co.,Ltd. | +86-18521732826 | China | 48467 | 58 | Inquiry |
| Nanjing Shizhou Biology Technology Co.,Ltd | 17301488900 | China | 12582 | 58 | Inquiry |
| SHANGHAI ZZBIO CO., LTD. | 13916577892 19921389125 | China | 12063 | 58 | Inquiry |
| Shanghai Hao Zhun Biological Technology Co., Ltd. | 15800340161 | CHINA | 6846 | 58 | Inquiry |
| Nanjing Wogni Chemical Co., Ltd. | 15996452985 | China | 4948 | 58 | Inquiry |