Pentetic acid
（重定向自Diethylene triamine pentaacetic acid）
![](/Images/godic/202501/09/Diethylentriaminpentaessigsäure.svg2018.png")
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.