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CAS No 451-13-8 , 2-(2,5-dihydroxyphenyl)acetic acid Search by region : China

  • Name: 2-(2,5-dihydroxyphenyl)acetic acid
  • Synonyms: homogentisate; Homogentisate acid; 2,5-Dihydroxy-alpha-toluic acid; Homogentisinic acid; Alcapton;2,5-Dihydroxyphenylacetic acid; 451-13-8;2-(2,5-dihydroxyphenyl)acetic acid;
  • CAS Registry Number:
  • Melting Point: 150-152 °C(lit.)
  • Flash Point: 233.6°C
  • Boiling Point: 439.3°Cat760mmHg
  • Density: 1.478g/cm3
  • Safety Statements:
    Hazard Codes Xi
    Risk Statements 36/37/38
    Safety Statements 26-36
    WGK Germany 3
    RTECS AH0589000
  • Hazard Symbols: Xi: Irritant;
  • Flash Point: 233.6°C
  • EINECS: 207-192-7
  • Molecular Weight: 168.14672
  • InchiKey: IGMNYECMUMZDDF-UHFFFAOYSA-N
  • InChI: InChI=1S/C8H8O4/c9-6-1-2-7(10)5(3-6)4-8(11)12/h1-3,9-10H,4H2,(H,11,12)
  • Risk Statements: 36/37/38
  • Molecular Formula: C8H8O4
  • Molecular Structure:CAS No:451-13-8 2-(2,5-dihydroxyphenyl)acetic acid

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451-13-8 2,5-DIHYDROXYPHENYLACETIC ACID

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References of 2-(2,5-dihydroxyphenyl)acetic acid
Title: Homogentisic Acid
CAS Registry Number: 451-13-8
CAS Name: 2,5-Dihydroxybenzeneacetic acid
Synonyms: 2,5-dihydroxyphenylacetic acid; 2,5-dihydroxy-a-toluic acid
Molecular Formula: C8H8O4
Molecular Weight: 168.15
Percent Composition: C 57.14%, H 4.80%, O 38.06%
Literature References: An important intermediate in metabolism of tyrosine and phenylalanine, q.q.v.. Occurs in plants and in the urine of alkaptonurics: Garrod, Inborn Errors of Metabolism (Oxford Medical Publications, London, 1923, and later). Isoln from alkaptonuric urine: M?rner, Z. Physiol. Chem. 117, 85 (1921). Synthesis from 2,5-dihydroxymandelic acid or from 2,5-dihydroxyphenylglyoxylic acid by boiling with fuming HI: Neubauer, Flatow, ibid. 52, 395 (1907). Alternate syntheses: L. DeForrest Abbott, J. D. Smith, J. Biol. Chem. 179, 365 (1949); S. B. Bostock, A. H. Renfrew, Synthesis 1978, 66; J. L. Bloomer, K. M. Damodaran, ibid. 1980, 111. Biosynthesis from tyrosine: Davies et al., J. Chem. Soc. 1964, 3126. Metabolic studies: W. E. Knox, M. LeMay-Knox, Biochem. J. 49, 686 (1951); B. N. LaDu, V. G. Zannoni, J. Biol. Chem. 217, 777 (1955).
 
Derivative Type: Monohydrate
Properties: Prisms from water. Anhydrous leaflets from hot alcohol + chloroform, mp 152°. Freely sol in water, alcohol, ether; insol in chloroform, benzene. Easily dehydrated to the lactone. Aq solns are stable.
Melting point: mp 152°
 
Derivative Type: Dimethyl ether
Molecular Formula: C10H12O4
Molecular Weight: 196.20
Percent Composition: C 61.22%, H 6.16%, O 32.62%
Properties: mp 124.5°.
Melting point: mp 124.5°
 
Derivative Type: Methyl ester dimethyl ether
Molecular Formula: C11H14O4
Molecular Weight: 210.23
Percent Composition: C 62.84%, H 6.71%, O 30.44%
Properties: mp 45°.
Melting point: mp 45°