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MELIBIOSE

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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
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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
pka
12.45±0.20(Predicted)
form 
Crystalline Powder
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
CAS DataBase Reference
585-99-9(CAS DataBase Reference)
EPA Substance Registry System
Melibiose (585-99-9)
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Safety Information

WGK Germany 
3
TSCA 
Yes
HS Code 
29400090

MSDS

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MELIBIOSE Usage And Synthesis

Chemical Properties

White powder

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.

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.]

MELIBIOSESupplier

Shanghai Huicheng Biological Technology Co., Ltd. Gold
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021-60498804-
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J & K SCIENTIFIC LTD.
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010-82848833- ;010-82848833-
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Meryer (Shanghai) Chemical Technology Co., Ltd.
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TCI (Shanghai) Development Co., Ltd.
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021-67121386 / 800-988-0390
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BeiJing Hwrk Chemicals Limted
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0757-86329057-
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sales.gd@hwrkchemical.com