Pentetate calcium trisodiumProduct ingredient for Pentetic acid

Pentetic acid, also known as diethylenetriaminepentaacetic acid (DTPA), is a synthetic polyamino carboxylic acid with eight coordinate bond forming sites that can sequester metal ions and form highly stable DTPA-metal ion complexes. DTPA, along with its calcium and zinc trisodium salts, are the only FDA approved agents for the treatment of internal contamination by transuranics.¹ It is currently considered, in all the dosage forms, as a member of the list of approved inactive ingredients for drug products by the FDA.⁶ DPTA was developed by the pharmaceutical company CIS US and FDA approved on April 14, 2004.⁸