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Ecdysone

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Ecdysone Basic information
Ecdysone Chemical Properties
  • Melting point:242°C
  • alpha 20578 +62°
  • Boiling point:488.1°C (rough estimate)
  • Density 1.0493 (rough estimate)
  • refractive index 1.4482 (estimate)
  • storage temp. 2-8°C
  • pka14.07±0.70(Predicted)
  • Merck 13,3525
  • BRN 2422986
  • CAS DataBase Reference3604-87-3(CAS DataBase Reference)
Safety Information
  • Safety Statements 22-24/25
  • WGK Germany 3
  • RTECS FZ8170000
  • 10
MSDS
Ecdysone Usage And Synthesis
  • Metabolic pathwayWhen white mice are administered 3H-ecdyson, (2b,3b,14a,22(R),25-pentahydroxy-5b-cholest-7-ene-6- one) by injection intraperitoneally, ecdysone is metabolized via hydroxylation at C14, followed by reduction of ring B into the 6a-hydroxy derivative and epimerization at C3.
  • Purification MethodsRecrystallise -ecdyson from tetrahydrofuran/pet ether and from H2O as a hydrate. It has been purified by chromatogaphy on Al2O3 and elution with EtOAc/MeOH. It has max at 242nm ( 12,400). Its acetate has m 214-216o from EtOAc/pet ether, and the 2,4-dinitrophenylhydrazone has m 170-175o(dec) from EtOAc. [Karlson & Hoffmeister Justus Liebigs Ann Chem 662 1 1963, Karlson Pure Appl Chem 14 75 1967, Beilstein 8 IV 3613.]
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