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CAS No 501-30-4 , 5-hydroxy-2-(hydroxymethyl)pyran-4-one

  • Name: 5-hydroxy-2-(hydroxymethyl)pyran-4-one
  • Synonyms: 5-hydroxy-2-(hydroxymethyl)pyran-4-one; 5-Hydroxy-2-hydroxymethyl-4-pyrone; 5-Hydroxy-2-(hydroxymethyl)-4-pyrone;501-30-4; 5-Hydroxy-2-(hydroxymethyl)-4H-pyran-4-one;
  • CAS Registry Number:
  • Transport: 10kg
  • Density: 1.542 g/cm3
  • Water Solubility: SOLUBLE
  • Safety Statements: S24/25
  • Hazard Symbols: Xn
  • HS Code: 29329995
  • EINECS: 207-922-4
  • Molecular Weight: 142.10944
  • InchiKey: BEJNERDRQOWKJM-UHFFFAOYSA-N
  • InChI: InChI=1S/C6H6O4/c7-2-4-1-5(8)6(9)3-10-4/h1,3,7,9H,2H2
  • Risk Statements: S24/25,
  • Molecular Formula: C6H6O4
  • Molecular Structure:CAS No:501-30-4 5-hydroxy-2-(hydroxymethyl)pyran-4-one

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References of 5-hydroxy-2-(hydroxymethyl)pyran-4-one
Title: Kojic Acid
CAS Registry Number: 501-30-4
CAS Name: 5-Hydroxy-2-(hydroxymethyl)-4H-pyran-4-one
Synonyms: 5-hydroxy-2-(hydroxymethyl)-4-pyrone; 2-hydroxymethyl-5-hydroxy-g-pyrone
Molecular Formula: C6H6O4
Molecular Weight: 142.11
Percent Composition: C 50.71%, H 4.26%, O 45.03%
Literature References: Antibiotic substance produced in an aerobic process by a variety of microorganisms from a wide range of carbon sources. Isoln from Aspergillus oryzae: Saito, Bot. Mag. Tokyo 21, 249 (1907). Structure: Yabuta, J. Chem. Soc. 125, 575 (1924); Heyns, Vogelsang, Ber. 87, 13 (1954). Synthesis: Stacey, Turton, J. Chem. Soc. 1946, 661; Lichtenthaler, Heidel, Angew. Chem. Int. Ed. 8, 978 (1968). Industrial prepn: GB 826244 (1959 to Pfizer), C.A. 54, 11372e (1960). Mutagenicity study: C. I. Wei et al., Toxicol. Lett. 59, 213 (1991). Review: Beélik, Adv. Carbohydr. Chem. 11, 145-183 (1956); Wilson, "Miscellaneous Aspergillus Toxins" in Microbial Toxins vol. VI, A. Ciegler et al., Eds. (Academic Press, New York, 1971) pp 235-250.
Properties: Prismatic needles from acetone, ethanol + ether or methanol+ ethyl acetate, mp 153-154°. pKa 7.90, 8.03. Freely sol in water, ethanol, acetone; sparingly sol in ether, ethyl acetate, chloroform, pyridine. Absorption spectrum: Stacey, Turton.
Melting point: mp 153-154°
pKa: pKa 7.90, 8.03
Use: Converted to maltol and ethyl maltol, flavor-enhancing additives. Food additive to inhibit tyrosinase.