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Updated: Jul 12, 2026
10:42
Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh
Published on: May 3, 2019
Aromatic ring tritiation and tritium decay catastrophe.
1Revvity Inc., 77 4th Avenue, Waltham, MA 02451, USA.
Summary
Rosalyn Yalow discovered "decay catastrophe," where radioactive decay preserves radioligand potency. This study extends tritium decay catastrophe to high molar activity radioligands, confirming its utility in radiopharmaceutical development.
Area of Science:
- Biochemistry
- Radiochemistry
- Pharmacology
Background:
- Rosalyn Yalow discovered
- decay catastrophe
- a phenomenon where radioactive decay preserves radioligand potency.
Purpose of the Study:
- To document tritium decay catastrophe in a high molar activity radioligand.
- To extend the understanding of decay catastrophe to radioligands labeled with tritium in aromatic positions.
Main Methods:
- Investigated the effects of radioactive decay on tritium-labeled radioligands.
- Analyzed structural changes and binding affinity of decayed peptides.
Main Results:
- Demonstrated tritium decay catastrophe in a high molar activity radioligand.
- Confirmed that fragmented peptides lose binding affinity, preserving potency of intact radioligands.
Conclusions:
- Tritium decay catastrophe is a significant factor in radioligand stability.
- This phenomenon can be leveraged to enhance the shelf-life and efficacy of radiopharmaceuticals.
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