The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 1988
Filed:
Jul. 17, 1985
Raymond Bertholet, Blonay, CH;
Pierre Hirsbrunner, Les Monts-de-Corsier, CH;
Nestec S.A., Vevey, CH;
Abstract
A double sulfate salt of 1-desoxy-(5-hydroxytryptamino)-D-fructose (DSF) and 1-methylhydantoin-2-imide (creatinine) represents a new solid crystalline phase of unit composition, pharmaceutical quality and remarkable stability. It is prepared by glycosylation of serotonin with D-glucose, formation of the double salt by addition of sulfuric acid and creatinine and crystallization of the double salt in the presence of ethanol. The DFS is preferably isolated from the reaction medium by way of the addition complex DFS.Ca(OH).sub.2 which is precipitated by the addition of calcium hydroxide. The calcium hydroxide is then eliminated by addition of sulfuric acid and the double salt is crystallized as described above. DFS is the active principle of a medicament effective, in particular, in the treatment of leprosy.