Process for purifying tryptophane and derivatives of...

Details Process for purifying tryptophane and derivatives of... Process for purifying tryptophane and derivatives of...

C - Chemistry, Metallurgy

07

D

260/319

C07D 209/20 (2006.01)

Patent

CA 1108157

ABSTRACT OF THE DISCLOSURE Tryptophan and tryptophan derivatives are purified by treating them in an inert solvent at temperatures between approximately 20°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 satisfac- tory colour.

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