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Radiopharmaceutical Proprietary Names 

Radiopharmaceutical Proprietary Names

Margaret A. Winker

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Radiopharmaceutical Proprietary Names

In proprietary names of radiopharmaceuticals, isotope numbers may appear in the same position as in the approved non-proprietary names, but they are usually joined to the rest of the name by a hyphen and are not necessarily preceded by the element symbol. Follow the USP Dictionary1 or the usage of individual manufacturers.


Nonproprietary (Preferred)

Iodotope I-131

sodium iodide I 131


iothalamate sodium I 125

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