Process for the purification of gabapentin
US7393975B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Jun 17, 2004 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | May 12, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of gabapentin which comprises the passage of a gabapentin inorganic salt through a strong cationic ionic exchange resin, the elution of gabapentin fixed on the column, the concentration of the resultant solution and the cristallization from organic solvent, characterized in that the elution of gabapentin fixed on the column is carried out by using an ammonia and alkaline hydroxide aqueous solution, is described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.