4-硝基苯硼酸

Shanghai ColdSpring Biopharma Co.,Ltd (ColdSpring Biopharma) is an innovation-driven high-tech company which focuses on the research and development of heterocyclic boronic acids and heterocyclic pharmaceutical intermediates, and is operating two production bases in Shanghai ( gram to kilo scale) and Shijiazhuang ( kilo to ton scale). ColdSpring developed over 200 boronic acids and its derivatives in the past 3 years, and maintains stocks of pyridine series, pyrimidine series, thiohene series, quinoline series and indole series at present. As one of the most professional heterocyclic boron