What is "pentetic acid"

n. (context organic compound English) Diethylene triamine pentaacetic acid (DTPA), a polyamino carboxylic acid consisting of a diethylenetriamine backbone modified with five carboxymethyl groups, used as a chelating agent to treat radioactive contamination.

Pentetic acid or diethylenetriaminepentaacetic acid (DTPA) is an aminopolycarboxylic acid consisting of a diethylenetriamine backbone with five carboxymethyl groups. The molecule can be viewed as an expanded version of EDTA and is used similarly. It is a white, water-soluble solid.