US Patent Issued to AURISCO PHARMACEUTICAL (TIANJIN), AURISCO PHARMACEUTICAL on June 30 for "High-purity thienopyrimidine compound and preparation method therefor" (Chinese Inventors)

ALEXANDRIA, Va., July 16 -- United States Patent no. 12,668,597, issued on June 30, was assigned to AURISCO PHARMACEUTICAL (TIANJIN) INC. (Tianjin, China) and AURISCO PHARMACEUTICAL Co. LTD. (Taizhou, China).

"High-purity thienopyrimidine compound and preparation method therefor" was invented by Wancheng Guo (Tianjin, China), Fuchang Zhang (Tianjin, China), Yongli Duan (Tianjin, China), Xiongpeng Duan (Tianjin, China) and Guoping Wang (Tianjin, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A thienopyrimidine compound (a compound of formula N) and a preparation method therefor are provided. Specifically, the preparation method includes the steps of: (a) in a solvent A, reacting, in the presence of an o...