Jintan Shetou Chemical Factory is a specialized researcher, developer and manufacturer of pharmaceutical intermediates, including heterocyclic pharmaceutical intermediates (indole, purine and pyridine, etc.) and APIs. With the development of our business, we now have had the good ability to perform a series of reactions, including oxidization, diazotization, Hofmann degradation, aminolysis and anhydrous reaction, etc. Relying on experienced tech...