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Thursday, February 09, 2012


  • Pentetic acid or diethylene triamine pentaacetic acid (DTPA) is a polyamino carboxylic acid consisting of a diethylenetriamine backbone with five carboxymethyl groups.
  • The molecule can be viewed as an expanded version of EDTA and it is used similarly.
  • DTPA is a calcium (Ca-DTPA) or zinc salt (Zn-DTPA) that is used to perform medical
  • imaging of the brain, kidneys, and lungs.
  • It is can also be used to remove certain radioactive materials, except uranium or neptunium, from a person’s body.

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