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CAS No 93-35-6 , 7-hydroxychromen-2-one

  • Name: 7-hydroxychromen-2-one
  • Synonyms: Coumarin; 7-hydroxy-; Hydrangine; 93-35-6; Hydrangin; Skimmetine; Umbelliferon; Skimmetin;Umbelliferone; 7-Oxycoumarin;7-hydroxychromen-2-one;
  • CAS Registry Number:
  • Melting Point: 228-234 ºC
  • Flash Point: 181
  • Boiling Point: 382
  • Density: 1.403g/cm3
  • Refractive index: 1.64
  • Water Solubility: 1 G/100 ML (100 ºC)
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • HS Code: 29322980
  • Flash Point: 181
  • EINECS: 202-240-3
  • Molecular Weight: 162.14214
  • InchiKey: ORHBXUUXSCNDEV-UHFFFAOYSA-N
  • InChI: InChI=1S/C9H6O3/c10-7-3-1-6-2-4-9(11)12-8(6)5-7/h1-5,10H
  • Risk Statements: S26;S36
  • Molecular Formula: C9H6O3
  • Molecular Structure:CAS No:93-35-6 7-hydroxychromen-2-one

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93-35-6 7-HYDROXYCOUMARIN

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93-35-6 7-Hydroxycoumarin

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93-35-6 Hydrangin

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93-35-6 7-Hydroxycoumarin (Umbelliferone)

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References of 7-hydroxychromen-2-one
Title: Umbelliferone
CAS Registry Number: 93-35-6
CAS Name: 7-Hydroxy-2H-1-benzopyran-2-one
Synonyms: 7-hydroxycoumarin; hydrangin; skimmetin
Molecular Formula: C9H6O3
Molecular Weight: 162.14
Percent Composition: C 66.67%, H 3.73%, O 29.60%
Literature References: The aglucon of skimmin. Present in many plants. Obtained by distillation of resins from umbelliferae: Zwenger, Ann. 115, 1, 15 (1860). Prepn: Bert, Compt. Rend. 214, 230 (1942); Austerweil, ibid. 248, 1810 (1959); Dressler, Reabe, US 3503996 (1970 to Koppers). Main product of metabolism of coumarin in man: Schilling et al., Nature 221, 664 (1969). Metabolism studies of umbelliferone: Indahl, Scheline, Xenobiotica 1, 13 (1971). Use in brain intracellular pH measurements: T. M. Sundt, R.E. Anderson, Brain Res. 186, 355 (1980); eidem, J. Neurophysiol. 44, 60 (1980). Use in fluorescent immunoassays: S. G. Thompson, J. F. Burd, Antimicrob. Agents Chemother. 18, 264 (1980); T. M. Li et al., Anal. Biochem. 118, 102 (1981).
Properties: Needles from water, mp 225-228°. Develops odor of coumarin on heating. Sublimes. Absorption spectrum: Sen, Bagchi, J. Org. Chem. 24, 316 (1959). One gram dissolves in ~100 ml boiling water; freely sol in alcohol, chloroform, acetic acid; sol in dil alkalies; sparingly sol in ether. Solns show blue fluorescence.
Melting point: mp 225-228°
Use: In sunscreen lotions and creams; as intracellular and pH sensitive fluorescent indicator and blood-brain barrier probe.