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CAS No 32449-92-6 , D(+)-Glucurono-3,6-lactone Search by region : Germany

  • Name: D(+)-Glucurono-3,6-lactone
  • CAS Registry Number:
  • Melting Point: 170-176 ºC
  • Density: 1.749 g/cm3
  • Refractive index: 18.5 ° (C=5, H2O)
  • Alpha: 19 º (C=10, H2O)
  • Safety Statements: 24/25-36-26
  • Hazard Symbols: Xi: Irritant;
  • HS Code: 29322980
  • EINECS: 251-053-3
  • Molecular Weight: 176.12
  • InChI: InChI=1/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h1-5,8-10H/t2-,3+,4-,5+/m0/s1
  • Risk Statements: S24/25
  • Molecular Formula: C6H8O6
  • Molecular Structure:CAS No:32449-92-6 D(+)-Glucurono-3,6-lactone

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References of D(+)-Glucurono-3,6-lactone
Title: D-Glucuronolactone
CAS Registry Number: 32449-92-6
CAS Name: D-Glucuronic acid g-lactone
Synonyms: D-glucofuranurono-6,3-lactone; glucurolactone; glucurone
Trademarks: Dicurone; Glucoxy; Guronsan
Molecular Formula: C6H8O6
Molecular Weight: 176.12
Percent Composition: C 40.92%, H 4.58%, O 54.51%
Literature References: Found in many plant gums in polymeric combination with other carbohydrates. Important structural constituent of practically all fibrous and connective tissues in the animal organism, cf. D-glucuronic acid. Prepd synthetically from many polysaccharides or suitable glucosides where the hydroxyl at carbon 6 may be oxidized while the other sensitive groups are protected. Prepn: Stacey, J. Chem. Soc. 1939, 1529; Hardegger, Spitz, Helv. Chim. Acta 33, 337 (1950); Marsh, Proc. Biochem. Soc. [Biochem. J.], 50, XI (1951); Mehltretter et al., J. Am. Chem. Soc. 73, 2424 (1951); Phillips, Moody, J. Chem. Soc. 1960, 762. Structure: J. Stanek et al., The Monosaccharides (Academic Press, New York, 1963) p 259. For isoln procedures see the ref under glucuronic acid.
Properties: Crystals from ethanol, mp 176-178°. (Commercial grades, mp 172°.) d430 1.76. [a]D25 +19.8° (c = 5.19). Soluble in water (26.9 g/100 ml of soln); slightly sol in methanol (2.8 g/100 ml). Very slightly sol in abs ethanol (0.7 g/100 ml), in glacial acetic acid (0.3 g/100 ml). The free acid is more sol than the lactone. At room temp an aq soln of glucuronolactone reaches an equilibrium of about 20% lactone and 80% acid within 2 months. At 100° an equilibrium of 60% lactone and 40% free acid is reached within 2 hrs. Initial pH of 10% aq soln 3.5, after 1 week the pH is about 2.5.
Melting point: mp 176-178°; Commercial grades, mp 172°
Optical Rotation: [a]D25 +19.8° (c = 5.19)
Density: d430 1.76
Therap-Cat: Detoxicant.