Glucosamine sulfate potassium chloride and process of preparation thereof
US5843923A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1998 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | May 22, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H11/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A composition comprising the compound glucosamine sulfate potassium chloride having a purity level of at least about 97% and water present in a maximum amount of about 10 wt. %, based on the weight of the composition. The compound is prepared by contacting glucosamine hydrochloride with potassium sulfate in the presence of water to form an aqueous solution of glucosamine sulfate potassium chloride and thereafter freeze-drying the solution at a temperature and at a reduced pressure for such period of time that at least about 90 wt. % of the water is removed and decomposition of the compound glucosamine sulfate potassium chloride is limited to a maximum of about 3%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.