Ceftolozane and its Impurities

Ceftolozane/tazobactam, sold under the brand name Zerbaxa, is a combination antibiotic medication used for the treatment of complicated urinary tract infections and complicated intra-abdominal infections in adults. Reference standards of Ceftolozane API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.