Technetium (99mTc) medronic acid

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Technetium (99mTc) medronic acid
Tc-99m medronic acid skeletal.svg
Clinical data
Routes of
ATC code V09BA02 (WHO)
PubChem (CID) 157443
Chemical and physical data
Formula CH6O6P2 • x99mTc
Molar mass unknown

Technetium (99mTc) medronic acid is a pharmaceutical product used in nuclear medicine to localize bone metastases[1] as well as other diseases that can alter the natural turn-over in the bone.[2]


The drug is a complex of medronic acid, the simplest bisphosphonate, with technetium-99m (99mTc), a radionuclide that emits gamma rays. The exact structure of the complex is not known.[2][3]