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| | MELIBIOSE Basic information |
| Product Name: | MELIBIOSE | | Synonyms: | (2R,3R,4S,5S,6R)-6-((((2S,3R,4S,5R,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)methyl)tetrahydro-2H-pyran-2,3,4,5-tetraol hydrate;6-O-α-D-Galactopyranosyl-D-glucopyranose Monohydrate;6-O-.alpha.-galactopyranosyl-D-Glucose;6-o-alpha-d-galactopyranosyl-d-glucos;Melibiose,α-D-Melibiose hydrate, 6-α-D-Galactopyranosyl-D-glucopyranose, 6-O-α-D-Galactopyranosyl-D-glucose;6-α-D-Galactopyranosyl-D-glucopyranose;D-Melibiose monohydrate ,98%;D-(+)-Melibiose | | CAS: | 585-99-9 | | MF: | C12H22O11 | | MW: | 342.3 | | EINECS: | 209-568-6 | | Product Categories: | Inhibitors;Basic Sugars (Mono & Oligosaccharides);Biochemistry;Disaccharides;Sugars;Dextrins、Sugar & Carbohydrates | | Mol File: | 585-99-9.mol |  |
| | MELIBIOSE Chemical Properties |
| Melting point | 182 °C (dec.) (lit.) | | alpha | +138 - +143° (D/20)(c=1, dil. NH4OH,18hr)(calculated on the dried basis) | | Boiling point | 774.5±60.0 °C(Predicted) | | density | 1.68±0.1 g/cm3(Predicted) | | storage temp. | Sealed in dry,Room Temperature | | solubility | H2O: soluble0.1g/mL, clear, colorless | | form | Crystalline Powder | | pka | 12.45±0.20(Predicted) | | color | White | | optical activity | [α]20/D +137±3°, 10 hr, c = 5% in H2O | | Water Solubility | Soluble in water at 100mg/ml | | Merck | 5820 | | BRN | 93360 | | Stability: | Hygroscopic | | LogP | -3.200 (est) | | CAS DataBase Reference | 585-99-9(CAS DataBase Reference) | | EPA Substance Registry System | Melibiose (585-99-9) |
| WGK Germany | 3 | | TSCA | Yes | | HS Code | 29400090 |
| | MELIBIOSE Usage And Synthesis |
| Chemical Properties | White powder | | Uses | Melibiose has been used in a study to improve the preparation of benzoylated ethyl 1-thioglycosides. It has also been used in a study to investigate the effect of water plasticization on the molecular mobility and crystallization tendency of amorphous disaccharides. | | Definition | A disaccharide con-
sisting of two glucose units in an alpha (1-
6)glycosidic linkage. It is an effector molecule that
permits activation of the lac operon by binding to
the repressor molecule.
| | Definition | A salt
that has a single molecule of WATER OF
CRYSTALLIZATION, such as sodium carbonate
monohydrate, Na2CO3.H2O. | | Definition | monohydrate: A crystalline compoundhaving one mole of water permole of compound. | | General Description | Melibiose is a carbon substrate. | | Purification Methods | Melibiose crystallises as a hydrate from water or aqueous EtOH. The anomer is obtained by recrystallising 1g from a mixture of 0.35mL of H2O and 0.2mL of EtOH. It crystallises easily with m 179o and mutarotates from [] D 20 +166o to +142.3o (220minutes, c 4, H2O). Crystallisation from MeOH gives the anhydrous form which hydrates to the monohydrate in air. The anomer dihydrate m 85-86o mutarotates from [] D 20 +123.5o to +143.1o (c 4, H2O for anhydrous). [Fletcher & Diehl J Am Chem Soc 74 5774 1952, Beilstein 1 7 III/IV 3075, 17/7 V 206.] |
| | MELIBIOSE Preparation Products And Raw materials |
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