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ChemicalBook >  Product Catalog >  Food Additives >  Colorant >  Natural pigment >  5,8-Dihydroxy-2-[(1R)-1-hydroxy-4-methyl-pent-3-enyl]naphthalene-1,4-dione

5,8-Dihydroxy-2-[(1R)-1-hydroxy-4-methyl-pent-3-enyl]naphthalene-1,4-dione

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5,8-Dihydroxy-2-[(1R)-1-hydroxy-4-methyl-pent-3-enyl]naphthalene-1,4-dione Basic information
5,8-Dihydroxy-2-[(1R)-1-hydroxy-4-methyl-pent-3-enyl]naphthalene-1,4-dione Chemical Properties
  • Melting point:148℃
  • Boiling point:567.4±50.0 °C(Predicted)
  • Density 1.373±0.06 g/cm3(Predicted)
  • form Red crystalline solid.
  • pka7.34±0.20(Predicted)
  • CAS DataBase Reference517-89-5(CAS DataBase Reference)
Safety Information
5,8-Dihydroxy-2-[(1R)-1-hydroxy-4-methyl-pent-3-enyl]naphthalene-1,4-dione Usage And Synthesis
  • UsesA naphthoquinone derivative with angiogenesis inhibitor properties.
  • UsesShikonin (CI 75535) occurs as an acetyl derivative in the Japanese shikone, Lithospermum erythrorhizon, another member of the Boraginaceae family. It is the (R)-optical isomer of alkannin. Tissue cultures of L. erythrorhizon are used in Japan to manufacture shikonin mainly for cosmetic use. Both alkannin and shikonin are mordant dyes producing violet to gray colors on fabrics. In Japan, shikonin was used to dye fabrics a color known as Tokyo Violet. Shikalkin the racemate, has been synthesized.
5,8-Dihydroxy-2-[(1R)-1-hydroxy-4-methyl-pent-3-enyl]naphthalene-1,4-dione Preparation Products And Raw materials
5,8-Dihydroxy-2-[(1R)-1-hydroxy-4-methyl-pent-3-enyl]naphthalene-1,4-dione(517-89-5)Related Product Information
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