Patents Assigned to ASKA PHARMACEUTIAL CO., LTD.
  • Stable isotope-labeled compounds
    Patent number: 11208431
    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.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: December 28, 2021
    Assignee: ASKA PHARMACEUTIAL CO., LTD.
    Inventors: Koichi Minato, Yusuke Ito