Nanjing Shunxiang specializes in the R & D, production, sales and information of pharmaceutical chemical intermediates. It mainly produces amino protectant series, azo series and pyridine series. The main varieties are: Di tert butyl dicarbonate (Diboc, BOC anhydride), diisopropyl azodicarbonate (DIAD), pyridinium trioxide, pyridinium tribromide, pyridine hydrochloride, Pyridinium 4-toluenesulfonate. Nanjing Shunxiang is the forerunner in the production of Di tert butyl dicarbonate. With 20 years of production experience, technological optimization and innovation and a mature production technology team, the products have been highly recognized by the market. In 2012, the company became the supplier of Novartis, Abbott, Pfizer and other international well-known enterprises.