Properties: white crystalline powder used as a pharmaceutical intermediate. This product is a white crystalline powder, soluble in water. Pharmacology actions:The product have evidently functions for gram-negative bacteria such as E. coli, Proteus, Salmonella, Klebsiella pneumoniae, etc. Especially strong activity for Enterobacteriaceae. This product is mainly used for the infection of respiratory tract, urinary tract, skin and soft tissue, abdominal cavity, gastrointestinal tract, sepsis and purulent meningitis.