US Patent Issued to TWi Biotechnology on Sept. 15 for "Crystal form of 3-hydroxy-5-pregnane-20-one derivative, and preparation method therefor and use thereof" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,448, issued on Sept. 15, was assigned to TWi Biotechnology Inc. (Taipei City, Taiwan).

"Crystal form of 3-hydroxy-5-pregnane-20-one derivative, and preparation method therefor and use thereof" was invented by Fei Liu (Nanjing, China), Gang Wu (Nanjing, China), Xianchao Li (Nanjing, China), Xiaobo Wang (Nanjing, China) and Jinwei Liu (Nanjing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention provides a crystal of a compound represented by formula I as a 3-hydroxy-5-pregnane-20-one derivative and a preparation method therefor. Specifically, the present invention provides novel crystal forms A-C of the compound represented by...