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US 4,537,727 AGranted
Process for recovering 2-acetylthiomethyl-5-aminopentanoic acid
AssigneeEli Lilly and Company
InventorsRussell L. Barton, Stephen L. Briggs, Gary A. Koppel
Life of this patent
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Abstract
A process is described for recovering 2-acetylthiomethyl-5-aminopentanoic acid from an impure acid addition salt thereof by treating the latter in a polar organic solvent with a base.
Claims6
A process for recovering 2-acetylthiomethyl-5-aminopentanoic acid of increased purity from an impure acid addition salt thereof, which comprises treating the impure acid addition salt in a polar organic solvent selected from the group consisting of a nitrile, an alcohol, a glycol, nitromethane, nitrobenzene, and an amide with a base selected from the group consisting of an alkoxide and an amine.
Dependencies are inferred from the claim text.