Thallous chloride is a diagnostic radiopharmaceutical for myocardial perfusion testing and tests of parathyroid function. Thallous chloride (also known as Thallium(I) chloride) is a colourless solid intermediate in the isolation of thallium from its ores.
- Mechanism
- Curator reviewed
Thallous Chloride TI201 without carrier, accumulates in the heart (myocardium) in a similar way to that of potassium. Thallous Chloride Tl 201 images have been found to visualize areas of infarction as “cold” or nonlabeled regions which are confirmed by electrocardiographic and enzyme changes. Regions of transient myocardial ischemia corresponding to areas perfused by coronary arteries with partial stenoses have been visualized when Thallous Chloride Tl 201 was administered in conjunction with an exercise stress test. Anatomic configurations may interfere with visualization of the right coronary artery.
- Primary indication
- For use as a diagnostic radiopharmaceutical.Curator reviewed · 6 structured indications
- Formula / weight
- ClTl · 239.836 g/mol (avg)
- Also known as
- Thallium chloride · thallium monochloride · Thallium(I) chloride
- Code names
- NSC-15197
Resolves to
GBECUEIQVRDUKB-UHFFFAOYSA-MSMILES[Cl-].[Tl+]What you can answer from here — as of September 26, 2026
Which other approved drugs treat the same conditions as Thallous chloride, and which companies have late-stage candidates in those indications?
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