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CAS No 475-25-2 , 3,4,6a,10-tetrahydroxy-6,7-dihydroindeno[2,1-c]chromen-9-one

  • Name: 3,4,6a,10-tetrahydroxy-6,7-dihydroindeno[2,1-c]chromen-9-one
  • Synonyms: Hematine;3,4,6a,10-tetrahydroxy-6,7-dihydroindeno[2,1-c]chromen-9-one; 475-25-2; NSC7333; AI3-63013; BRN 0093039; EINECS 207-492-8; NSC 7333; hydroxybrazilein;Haematein;
  • CAS Registry Number:
  • Melting Point: 180 °C
  • Flash Point: 289°C
  • Boiling Point: 753.1°Cat760mmHg
  • Density: 1.77g/cm3
  • Refractive index: 1.765
  • Safety Statements: Mutation data reported. When heated to decomposition it emits acrid smoke and irritating vapors.
  • Flash Point: 289°C
  • EINECS: 207-492-8
  • Molecular Weight: 300.26288
  • InchiKey: HLUCICHZHWJHLL-UHFFFAOYSA-N
  • InChI: InChI=1S/C16H12O6/c17-10-2-1-8-13-9-4-12(19)11(18)3-7(9)5-16(13,
    21)6-22-15(8)14(10)20/h1-4,17,19-21H,5-6H2
  • Molecular Formula: C16H12O6
  • Molecular Structure:CAS No:475-25-2 3,4,6a,10-tetrahydroxy-6,7-dihydroindeno[2,1-c]chromen-9-one

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References of 3,4,6a,10-tetrahydroxy-6,7-dihydroindeno[2,1-c]chromen-9-one
Title: Hematein
CAS Registry Number: 475-25-2
CAS Name: 6a,7-Dihydro-3,4,6a,10-tetrahydroxybenz[b]indeno[1,2-d]pyran-9(6H)-one
Synonyms: hydroxybrasilein; hydroxybrazilein
Molecular Formula: C16H12O6
Molecular Weight: 300.26
Percent Composition: C 64.00%, H 4.03%, O 31.97%
Literature References: Not to be confused with hematin. From hematoxylin or logwood extract and NH3 by treatment with air: Engels et al., J. Chem. Soc. 93, 1115 (1908); Rolland, Teintex 3, 261, 322, 460 (1938); Justin-Mueller, Melliand Textilber. 30, 26, 63 (1949), C.A. 46, 8375h (1952).
Properties: Reddish-brown crystals with yellowish-green metallic luster. mp >200°; also stated as 250° with decompn. Sol in about 1700 parts water; slightly sol in alcohol, ether; insol in benzene, chloroform; freely sol in ammonia with brownish-violet color and in dil NaOH with bright red color. Forms salts with heavy metals.
Melting point: mp >200°; also stated as 250° with decompn
Use: As an indicator like hematoxylin; for staining animal tissue, particularly cell nuclei.