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MELIBIOSE

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MELIBIOSE Basic information
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. Store at RT.
  • solubility H2O: soluble0.1g/mL, clear, colorless
  • pka12.45±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 Reference585-99-9(CAS DataBase Reference)
  • EPA Substance Registry SystemMelibiose (585-99-9)
Safety Information
  • WGK Germany 3
  • TSCA Yes
  • HS Code 29400090
MSDS
MELIBIOSE Usage And Synthesis
  • Chemical PropertiesWhite powder
  • DefinitionA 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.
  • DefinitionA salt that has a single molecule of WATER OF CRYSTALLIZATION, such as sodium carbonate monohydrate, Na2CO3.H2O.
  • Definitionmonohydrate: A crystalline compoundhaving one mole of water permole of compound.
  • Purification MethodsMelibiose 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(585-99-9)Related Product Information
MELIBIOSESupplierMore
  • Company Name:Shanghai Huicheng Biological Technology Co., Ltd. Gold
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