PROCESS FOR PURIFYING TRYPTOPHANE AND DERIVATIVES OF TRYPTOPHANE

    公开(公告)号:CA1108157A

    公开(公告)日:1981-09-01

    申请号:CA339966

    申请日:1979-11-15

    Applicant: DEGUSSA

    Abstract: Tryptophan and tryptophan derivatives are purified by treating them in an inert solvent at temperatures between approximately 20.degree.C and the boiling temperature of the mixture with a salt of dithionous acid. Mixtures of water and a lower aliphatic carboxylic acid are preferred as solvents. Sodium dithionite is preferred as the salt of dithionous acid. A single treatment usually results in a pure product having a satisfactory colour.

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