Introduction：Basic information about D-Galactal CAS 21193-75-9, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
D-Galactal Basic information
| Product Name: | D-Galactal |
| Synonyms: | GALACTAL;GALACTAL, D-;D-GALACTAL;D-Galactat;2-(Hydroxymethyl)-3,4-dihydro-2H-pyran-3,4-diol;1,5-ANHYDRO-2-DEOXY-D-LYXO-HEX-1-ENITOL;(2R,3R,4R)-2-(hydroxymethyl)-3,4-dihydro-2H-pyran-3,4-diol;(2R)-2α-(Hydroxymethyl)-3,4-dihydro-2H-pyran-3α,4α-diol |
| CAS: | 21193-75-9 |
| MF: | C6H10O4 |
| MW: | 146.14 |
| EINECS: | 244-264-7 |
| Product Categories: | 13C & 2H Sugars;Biochemistry;Galactose;Glycals;Sugars;Carbohydrates & Derivatives |
| Mol File: | 21193-75-9.mol |
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D-Galactal Chemical Properties
| Melting point | 99-103 °C (lit.) |
| Boiling point | 325.5±42.0 °C(Predicted) |
| density | 1.414±0.06 g/cm3(Predicted) |
| refractive index | -22 ° (C=1.2, MeOH) |
| storage temp. | 2-8°C |
| solubility | Acetonitrile (Slightly), Methanol (Slightly) |
| pka | 12.79±0.60(Predicted) |
| form | Solid |
| color | White to Off-White |
| Optical Rotation | [α]22/D 21.5°, c = 1.2 in methanol |
| BRN | 81690 |
| Stability: | Moisture Sensitive |
| InChI | 1S/C6H10O4/c7-3-5-6(9)4(8)1-2-10-5/h1-2,4-9H,3H2/t4-,5-,6-/m1/s1 |
| InChIKey | YVECGMZCTULTIS-HSUXUTPPSA-N |
| SMILES | OC[C@H]1OC=C[C@@H](O)[C@H]1O |
| CAS DataBase Reference | 21193-75-9(CAS DataBase Reference) |
Safety Information
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36-24/25 |
| WGK Germany | 3 |
| HS Code | 29329990 |
| Storage Class | 11 - Combustible Solids |
| Hazard Classifications | Eye Irrit. 2
Skin Irrit. 2
STOT SE 3 |
D-Galactal Usage And Synthesis
| Chemical Properties | White Powder |
| Uses | D-Galactal is an important building block for both solution- and solid-phase synthesis of oligosaccharides. |
| Definition | ChEBI: D-galactal is a glycal derived from D-galactopyranose It is a glycal and an anhydrohexose. |
| Synthesis | The preparation of D-galactal in the presence of D-galactose,glycol, water and β-galactosidase. |
| Purification Methods | Recrystallise D-galactal from EtOAc, EtOH or EtOAc/MeOH. [Overend et al. J Chem Soc 675 1950, Wood & Fletcher J Am Chem Soc 79 3234 1957, Distler & Jourdian J Biol Chem 248 6772 1973, Beilstein 17 III/IV 2332.] |
D-Galactal Preparation Products And Raw materials
| Raw materials | barium methanolate-->3,4,6-Tri-O-acetyl-D-galactal-->Tri-O-acetyl-D-glucal-->D-Galactopyranose pentaacetate-->2,3,4,6-Tetra-O-acetyl-alpha-D-galactopyranosyl bromide-->beta-D-Galactose pentaacetate-->D-(+)-GALACTOSE-->Methanol-->Sodium Methoxide |
| Preparation Products | 6-O-(TRIISOPROPYLSILYL)-D-GALACTAL-->3 4-DI-O-ACETYL-6-O-(TERT-BUTYLDIMETHYL& |
