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.
Diethylenetriaminepentaacetic acid is a diethylenetriaminepentaacetic anhydride, which is a bifunctional chelating agent. It is used for the treatment of poisoning.