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CAS No 518-44-5 , 2-(3,6-dihydroxy-9H-xanthen-9-yl)benzoic acid

  • Name: 2-(3,6-dihydroxy-9H-xanthen-9-yl)benzoic acid
  • Synonyms: 4fab; 518-44-5;2-(3,6-dihydroxy-9H-xanthen-9-yl)benzoic acid; SureCN27403; 2-(3,6-Dihydroxyxanthen-9-yl)benzoic acid; AC1L299D; AC1Q5U88; CHEBI:42492;resorcinolphthalin; CHEMBL1232699;
  • CAS Registry Number:
  • Flash Point: 201.9°C
  • Boiling Point: 549.8°C at 760 mmHg
  • Density: 1.449g/cm3
  • Refractive index: 1.714
  • Flash Point: 201.9°C
  • EINECS: 208-252-5
  • Molecular Weight: 334.32216
  • InchiKey: MURGITYSBWUQTI-UHFFFAOYSA-N
  • InChI: InChI=1S/C20H14O5/c21-11-5-7-15-17(9-11)25-18-10-12(22)6-8-16(18)19(15)
    13-3-1-2-4-14(13)20(23)24/h1-10,19,21-22H,(H,23,24)
  • Molecular Formula: C20H14O5
  • Molecular Structure:CAS No:518-44-5 2-(3,6-dihydroxy-9H-xanthen-9-yl)benzoic acid

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518-44-5 2-(3,6-DIHYDROXYXANTHEN-9-YL)BENZOIC ACID

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518-44-5 FLUORESCIN

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518-44-5 Fluorescin

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518-44-5 fluorescin

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References of 2-(3,6-dihydroxy-9H-xanthen-9-yl)benzoic acid
Title: Fluorescin
CAS Registry Number: 518-44-5
CAS Name: 2-(3,6-Dihydroxy-9H-xanthen-9-yl)benzoic acid
Synonyms: resorcinolphthalin
Molecular Formula: C20H14O5
Molecular Weight: 334.32
Percent Composition: C 71.85%, H 4.22%, O 23.93%
Literature References: Obtained by heating fluorescein with NaOH and zinc dust. Formation by Pseudomonas aeruginosa: King et al., Can. J. Res. 26C, 514 (1948); Totter, Moseley, J. Bacteriol. 65, 45 (1953).
Properties: Bright yellow powder, mp 125-127°. Readily oxidizes to fluorescein. Practically insol in water. Sol in alkali hydroxides or carbonates, alcohol, ether. Keep well closed.
Melting point: mp 125-127°
Use: Reagent for oxidases, peroxides.