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:
Jul. 28, 2020
Filed:
May. 21, 2015
Shiseido Company, Ltd, Chuo-ku, Tokyo, JP;
Shiseido Company, Ltd., Tokyo, JP;
Abstract
The present invention addresses the problem of providing a novel method for the pretreatment of a biological sample containing lenalidomide enantiomer and thereby establishing a simple and accurate method for the quantitative analysis of lenalidomide enantiomer. In the present invention, the racemization and decomposition of lenalidomide enantiomer in a biological sample can be prevented by the deproteinization under acidic conditions of the biological sample containing lenalidomide enantiomer, and the lenalidomide enantiomer can be simply and accurately quantitatively analyzed by subjecting to HPLC the biological sample that has been pretreated in such a way.