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CAS No 305-01-1 , 6,7-dihydroxychromen-2-one

  • Name: 6,7-dihydroxychromen-2-one
  • Synonyms: 6,7-dihydroxychromen-2-one; Aesculetin; Cichoriin aglucon;6,7-DIHYDROXYCOUMARIN; 305-01-1; Cichorigenin; Esculin aglucon; Esculetol; Esculatin;
  • CAS Registry Number:
  • Melting Point: 271-273 ºC
  • Density: 1.563 g/cm3
  • Refractive index: 1.594
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • EINECS: 206-161-5
  • Molecular Weight: 178.14154
  • InchiKey: ILEDWLMCKZNDJK-UHFFFAOYSA-N
  • InChI: InChI=1S/C9H6O4/c10-6-3-5-1-2-9(12)13-8(5)4-7(6)11/h1-4,10-11H
  • Risk Statements: S26;S37/39
  • Molecular Formula: C9H6O4
  • Molecular Structure:CAS No:305-01-1 6,7-dihydroxychromen-2-one

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References of 6,7-dihydroxychromen-2-one
Title: Esculetin
CAS Registry Number: 305-01-1
CAS Name: 6,7-Dihydroxy-2H-1-benzopyran-2-one
Synonyms: 6,7-dihydroxycoumarin; cichorigenin
Molecular Formula: C9H6O4
Molecular Weight: 178.14
Percent Composition: C 60.68%, H 3.39%, O 35.93%
Literature References: The aglucon of esculin and of cichoriin. By hydrolysis of esculin or of cichoriin: Merz, Arch. Pharm. 270, 486 (1932). By synthesis: Gattermann, K?bner, Ber. 32, 288 (1899); Bert, Compt. Rend. 214, 230 (1942). Review: Sethna, Shah, Chem. Rev. 36, 1 (1945).
Properties: Prisms from glacial acetic acid; leaflets by vacuum sublimation. mp 268-270°. Soluble in dil alkalies with blue fluorescence; moderately sol in hot alcohol and in glacial acetic acid; almost insol in ether, in boiling water.
Melting point: mp 268-270°
Use: In filters for absorption of ultraviolet light.