US Patent Issued to Hangzhou Zhongmei Huadong Pharmaceutical on Nov. 4 for "Crystalline form a of GLP-1 receptor agonist and preparation method therefor" (Chinese Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,459,954, issued on Nov. 4, was assigned to Hangzhou Zhongmei Huadong Pharmaceutical Co. Ltd. (Zhejiang, China).

"Crystalline form a of GLP-1 receptor agonist and preparation method therefor" was invented by Haiwen Hu (Zhejiang, China), Li Fang (Zhejiang, China), Fan Hu (Zhejiang, China), Fenfen Chen (Zhejiang, China) and Xinjie Zhou (Zhejiang, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a crystal form A of (S)-2-(3S,8S)-3-(4-(3,4-dichlorobenzyloxy)phenyl-7-((S)-1-phenylpropyl)-2,3,6,7,8,9-hexahydro-[1,4]-dioxino[2,3-g]isoquinolin-8-ylformylamino)-3-(4-(2,3-dimethylpyridin-4-yl)phenyl)propionic acid ("OAD2"), and methods ...