| Identification | More | [Name]
MELIBIOSE | [CAS]
585-99-9 | [Synonyms]
6-O-ALPHA-D-GALACTOPYRANOSYL-D-GLUCOSE
D-(+)-MELIBIOSE
MELIBIOSE
6-O-.alpha.-galactopyranosyl-D-Glucose
6-o-alpha-d-galactopyranosyl-d-glucos
6-O-α-D-Galactopyranosyl-D-glucose
melibiose, pure
monohydrate
alpha-D-(+)-Melobiose hydrate
ALPHA-D(+)-MELIBIOSE HYDRATE 99+%
Melibiose-H2O
D-Glucose, 6-O-.alpha.-D-galactopyranosyl-
α-d-melibiose hydrate
D-Melibioseanhydrous
2,3,4,5-tetrahydroxy-6-[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-hexanal
6-O-A-D-GALACTOPYRANOSYL-D-GLUCOPYRANOSE MONOHYDRATE
á-D-Melibiose
D(+)MELIBOSE extrapure
α-D-Melibiose hydrate, 6-α-D-Galactopyranosyl-D-glucopyranose, 6-O-α-D-Galactopyranosyl-D-glucose | [EINECS(EC#)]
209-568-6 | [Molecular Formula]
C12H22O11 | [MDL Number]
MFCD00168065 | [Molecular Weight]
342.3 | [MOL File]
585-99-9.mol |
| Chemical Properties | Back Directory | [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.
| [Appearance]
White powder | [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. ]
Store at RT. | [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) |
| Hazard Information | Back Directory | [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. | [General Description]
Melibiose is a carbon substrate. | [storage]
Store at -20°C | [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.] |
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