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:
Dec. 28, 2021
Filed:
Nov. 13, 2018
Applicant:
Aska Pharmaceutical Co., Ltd., Tokyo, JP;
Inventors:
Koichi Minato, Kawasaki, JP;
Yusuke Ito, Kawasaki, JP;
Assignee:
ASKA PHARMACEUTIAL CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07J 1/00 (2006.01); G01N 30/04 (2006.01); G01N 33/74 (2006.01); G01N 30/02 (2006.01);
U.S. Cl.
CPC ...
C07J 1/0022 (2013.01); G01N 30/02 (2013.01); G01N 33/743 (2013.01); C07B 2200/05 (2013.01); G01N 2030/027 (2013.01); G01N 2030/045 (2013.01);
Abstract
Provided are a novel internal standard useful in the measurement of androgens, a method capable of measuring the androgen in a highly selective and highly sensitive (accurate) manner using liquid chromatography mass spectrometry with simplified pretreatments, and a method for diagnosis of a disease using the androgen measurement method. The novel stable isotope-labeled compound is synthesized by performing reduction reaction in a specific solvent. An androgen is measured using this novel stable isotope-labeled compound as an IS.