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:
Jan. 13, 1987
Filed:
Aug. 17, 1984
Mark W Empie, Pleasantville, NY (US);
Stauffer Chemical Company, Dobbs Ferry, NY (US);
Abstract
Racemates of optically active amino acid substituted at the carbonyl position wherein the alpha amino acid nitrogen is underivatized and can be resolved using a two phase solvent system. The racemate is dissolved in a substantially water immiscible organic material which is a solvent for said amino acid racemate but not for the corresponding amino acids. The racemate is also dissolved in water (aqueous phase) and is in equilibrium with the racemate in the organic phase. One of the optical isomers of the amino acid racemate in the aqueous phase is enzymatically hydrolyzed to the corresponding amino acid and is recovered. The preferred product is L-phenylalanine.