Patent · US Expired

Process for obtaining D,L-homocystine (I)

US4550199A · kind A · utility

2Cited by

0References

7Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Michael Karrenbauer · Radolfzell, DE
Axel Kleemann · Hanau, DE
Theodor Lussling · Überlingen, DE
Fritz P. Schafer · Konstanz, DE

Key dates

Filing date	Mar 15, 1984
Grant date	Oct 29, 1985
Priority date	—
Expiry date	Mar 15, 2004

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C319/24
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

D,L-Homocystine is obtained by treating an aqueous solution of the disodium salt of D,L-homocysteine having a concentration between 0.4 and 1.6 moles/l and an initial pH between 7.0 and 8.0 under vigorous stirring with at least the equivalent amount of an aqueous solution of hydrogen peroxide and after the end of the oxidation adjusting the pH to about 5.3. The hydrogen peroxide solution can be employed with a concentration between 20 and 60 weight percent.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.