Zannan Pharma is a custom sythesis and process development company based in Shanghai, China. Zannan has experienced chemists with state of the art facilities to work on chemical R&D projects efficiently. Currently, Zannan provides; 1. Zhan (Ru) Catalysts, highly efficient for Metathesis; 2. Catalog building blocks; 3. Custom synthesis and manufacturing in China, which will facilitate the drug discovery and development for our customers and save the efforts and cost.