Technetium Tc-99m oxidronate, also known as 99mTc-methylene diphosphonate, is a radiopharmaceutical agent. A radiopharmaceutical is defined as a medicinal formulation containing radioisotopes that are used in major clinical areas for... The radiopharmaceuticals based on technetium-99m are widely used for diagnostic purposes because 99mTc has a versatile chemistry which allows it to produce an extense variety of complexes with specific characteristics.
- Mechanism
- Curator reviewed · 2 references
The exact mechanism for bone uptake of technetium Tc-99m oxidronate is unknown. The most accepted mechanism is the localization of 99m-Tc on the surface of hydroxyapatite crystals of bone by chemisorption. Chemisorption is explained as a type of adsorption that involves a chemical reaction between the surface and the adsorbate in which new strong interactions form electronic bonds at the adsorbent surface. The presented chemisorption are regulated by the blood flow and blood concentration because it restrains the delivery of the agent in the uptake sites.
- Primary indication
- Technetium Tc-99m oxidronate is indicated in adult and pediatric patients to be used in skeletal imaging for diagnosis of areas that can present altered osteogenesis.Curator reviewed · 1 structured indication
- Formula / weight
- CH6O7P2Tc · 290.906 g/mol (avg)
- Also known as
- 99mtc-HDP · Technetium (99mTc) oxidronate · Technetium 99mtc oxidronate · Technetium Tc 99m oxidronate
Resolves to
SIJNDWFHVBDXDY-NLQOEHMXSA-NSMILES[99Tc].OC(P(O)(O)=O)P(O)(O)=OWhat you can answer from here — as of April 02, 2025
Which other approved drugs treat the same conditions as Technetium Tc-99m oxidronate, and which companies have late-stage candidates in those indications?
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