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4-(4-Methoxyphenyl)-2-butanone Basic information
4-(4-Methoxyphenyl)-2-butanone Chemical Properties
Safety Information
  • Hazard Codes Xi
  • Risk Statements 36/37/38
  • Safety Statements 23-24/25
  • WGK Germany 2
  • RTECS EL9085500
  • TSCA Yes
  • HS Code 29145090
  • ToxicityBoth the acute oral LD50 value in rats and the acute dermal LD50 value in rabbits exceeded 5 g/kg (Russell, 1973)
4-(4-Methoxyphenyl)-2-butanone Usage And Synthesis
  • Description4-(p-Methoxyphenyl)-2-butanone has an intensely sweet, floral, fruity odor and a cherry-raspberry flavor at low concentrations. May be prepared by condensing acetone with anisaldehyde to yield anisylidene acetone and subsequent hydrogenation in the presence of Pd catalyst.
  • Chemical Properties4-(p-Methoxyphenyl)-2-butanone has an intensely sweet, floral,fruity odor and cherry–raspberry flavor at low concentrations.
  • Chemical Propertiesclear colourless to pale yellow liquid
  • OccurrenceContained (approximately 53% level) in the odorous principle obtained by extraction and hydrolysis from aloe wood (Aquilaria algallocha Roxb.) and in anise.
  • Uses4-(4-Methoxyphenyl)-2-butanone is used as pharmaceutical intermediate.
  • UsesIn insect attractants, organic synthesis, flavoring.
  • PreparationBy condensing acetone with anisaldehyde to yield anisylidene acetone and subsequent hydrogenation in the presence of Pd catalyst.
  • Aroma threshold valuesAroma characteristics at 5.0%: sweet, fruity, woody, powdery, honey, vanilla, raspberry and ionone-like.
  • Taste threshold valuesTaste characteristics at 40 ppm: floral, woody, ionone, raspberry, fruity, spice and berry.
  • Synthesis Reference(s)Tetrahedron Letters, 33, p. 951, 1992 DOI: 10.1016/S0040-4039(00)91585-5
  • Safety ProfileLow oral and skin toxicity. A flammable liquid. When heated to decomposition it emits acrid smoke and irritating fumes.
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