Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 27, 2008
Patent Application Number
10532207
Date Filed
November 17, 2003
Patent Primary Examiner
Patent abstract
A process for preparing carotenoids, in which the process includes reacting a dialkoxy dialdehyde in a double Wittig condensation with a phosphonium salt of or in a double Wittig-Horner condensation with a phosphonate. The carotenoids include, for example, β-carotene, zeaxanthin, canthaxanthin, astaxathin, lycopene and croceptin, which are useful as nutraceuticals, food colorants, and feed additives.
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