pentetic acid

[pĕn-tĕtĭk]
n.
  1. Diethylenetriamine penta-acetic acid; a chelating agent, especially for iron but also showing an affinity for heavy metals that is used in the treatment of iron-storage disease and poisoning from heavy and radioactive metals.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.