Core Viewpoint - Zhejiang Tianyu Pharmaceutical Co., Ltd. has applied for a patent for a preparation method of Azilsartan Ester Potassium Salt, indicating innovation in pharmaceutical manufacturing [1] Company Overview - Zhejiang Tianyu Pharmaceutical Co., Ltd. was established in 2003 and is located in Taizhou, primarily engaged in the pharmaceutical manufacturing industry [1] - The company has a registered capital of 3,479.77159 million RMB [1] - The company has invested in 22 enterprises and participated in 20 bidding projects [1] - It holds 9 trademark information and 75 patent information, along with 23 administrative licenses [1] Patent Details - The patent application, published as CN120441565A, was filed on January 2025 [1] - The preparation method involves crystallization of Azilsartan Ester with Potassium Octanoate in an organic solvent at a temperature of 30-50°C, followed by aging treatment for at least 10 hours [1] - The method results in high yield, good purity, low impurity content, and significantly increased potassium ion content, demonstrating good stability [1] - The process conditions are milder, reducing energy consumption and eliminating the need for complex devices, enhancing operational practicality [1]