ertapenem disodium and its Impurities

Ertapenem is used to treat severe infections of the skin, lungs, stomach, pelvis, and urinary tract. It is a carbapenem antibiotic marketed by Merck as Invanz. Reference standards of Ertapenem Disodium API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.