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:
Sep. 12, 2017
Filed:
Jul. 02, 2013
Applicant:
Del Mar Pharmaceuticals, Vancouver, CA;
Inventor:
Xiaoyun Liu, Vancouver, CA;
Assignee:
Del Mar Pharmaceuticals, Vancouver, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/49 (2006.01); G01N 30/88 (2006.01); G01N 33/15 (2006.01); G01N 30/06 (2006.01); G01N 30/72 (2006.01); G01N 21/00 (2006.01); G01N 30/74 (2006.01); G01N 30/02 (2006.01);
U.S. Cl.
CPC ...
G01N 30/88 (2013.01); G01N 21/49 (2013.01); G01N 30/06 (2013.01); G01N 30/7233 (2013.01); G01N 33/15 (2013.01); G01N 30/74 (2013.01); G01N 2030/027 (2013.01); G01N 2030/743 (2013.01); G01N 2030/8813 (2013.01); G01N 2030/8872 (2013.01); Y10T 436/142222 (2015.01); Y10T 436/203332 (2015.01);
Abstract
An improved analytical method for analysis of dianhydrogalactitol preparations provides a method for determining the purity of dianhydrogalactitol and detecting impurities in preparations of dianhydrogalactitol, as well as identifying any such impurities. The method employs high performance liquid chromatography (HPLC), in particular, HPLC with evaporative light scattering detection (ELSD); the HPLC can be followed by tandem mass spectroscopy. The method can further comprise the step of performing preparative HPLC collection of at least one specific substance peak present in a preparation of dianhydrogalactitol.