Purification of riboflavin

Details Purification of riboflavin Purification of riboflavin

1985-06-10

1987-08-18

Daus, Donald G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C07D47514

Patent

active

046878475

ABSTRACT:
Very pure riboflavin (I) is obtained by a process in which the riboflavin is dissolved in dilute aqueous alkali metal hydroxide solution, if necessary the alkaline solution is purified by treatment with active carbon or with a solvent which is insoluble or only slightly soluble in water, the resulting alkaline solution of I is introduced into water which is at 90.degree.-100.degree. C. and to which an acid has been added in an amount such that the reaction mixture is brought to a pH of from 6.5 to 0.8, the temperature being maintained at from 40.degree. to 100.degree. C., the reaction mixture is kept at from 90.degree. to 100.degree. C. for from 10 to 80 minutes and cooled, and I is then isolated.

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patent: 4567262 (1986-01-01), Grimmer et al.
Fermente Hormone-Vitamine, vol. III/1, Georg Thieme Verlag Stuttgart, 1974, p. 631.
Ullmanns Encyclopedia of Technischen Chemie, vol. 23, Verlap Chemie, Weinheim, 1983, p. 664.

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