Patent · US Expired

Optical resolution method for 3R-(3-carboxybenzyl)-6-(5-fluoro-2-benzothiazolyl)methoxy-4R-chromanol

US4987231A · kind A · utility

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Inventors

Key dates

Filing dateAug 4, 1989
Grant dateJan 22, 1991
Priority date—
Expiry dateAug 4, 2009

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY02P20/582
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

Preparative method for 3R-(3-carboxybenzyl)-6-(5-fluoro-2-benzothiazolyl)methoxy-4R-chromanol via its salt with quinine.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.