Process for the purification of gabapentin
US7365226B2 · kind B2 · utility
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24Claims
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Key dates
| Filing date | Dec 14, 2004 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Dec 14, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C227/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of gabapentin comprising the passage of a salt of the same through a ionic exchange resin of strong cationic type, the elution of the gabapentin which has fixed onto the column and the crystallization from organic solvent, characterized in that the resin is regenerated by using a mineral acid in a molar quantity between 50 and 90%, is described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.