Huoying Zhang

Title: Huoying Zhang: Innovator in Iodixanol Preparation

Introduction

Huoying Zhang is an esteemed inventor based in Tazhou, China. He has made significant contributions to the field of pharmaceutical chemistry through his innovative approach to the preparation and purification of iodixanol. His work is notable for its focus on improving synthesis methods, leading to higher efficiencies and purities in the final products.

Latest Patents

Zhang holds a patent for an improved synthesis method for iodixanol. This invention details a novel approach that minimizes excessive side reactions by controlling the pH of the reaction mixture using a boron-containing acidic substance, such as boric acid. The dimerization of 5-acetamido-N,N'-bis(2,3-dihydroxypropyl)-2,4,6-triiodo-isophthalamide (compound A) achieves a conversion rate of 85-90% to iodixanol. Furthermore, the iodixanol crude product undergoes purification through a macroporous adsorption resin chromatographic column, yielding a recovery of 90-95% and achieving a purity level of 96-98%. Additionally, recrystallization using a mixed solvent containing 2-methoxyethanol results in a final iodixanol product with a recovery of 90-95% and purity exceeding 99%.

Career Highlights

Huoying Zhang is affiliated with Imax Diagnostic Imaging Holding Limited, where he continues to explore advancements in diagnostic imaging technologies. His career reflects a strong commitment to innovation in the medical field, particularly in drug preparation and refinement processes that enhance the efficacy of imaging agents.

Collaborations

In his professional journey, Zhang collaborates with his coworker, Zhiqi Hu, contributing to a dynamic research environment focused on cutting-edge diagnostic imaging solutions. Their partnership exemplifies the importance of collaborative efforts in advancing medical technology and innovation.

Conclusion

In summary, Huoying Zhang's contributions to the synthesis and purification of iodixanol demonstrate his inventive spirit and dedication to enhancing pharmaceutical chemistry. His work not only serves the medical community but also illustrates the vital role of inventors in pushing the boundaries of scientific knowledge and applications.