Iobenguane Sulfate I 131

CHEMBL3989511 Phase 4 Approved Small molecule
Half-Life
Bioavailability
Protein Binding
Molecular Weight
656.3 g/mol
LogP
Phase
4

This radiolabeled compound is a targeted radiopharmaceutical approved for treating adults with advanced pheochromocytoma or paraganglioma that cannot be removed surgically. After intravenous injection, the compound is taken up by tumor cells, where the iodine-131 radioactivity delivers a lethal dose of radiation locally. Thyroid protective measures are required to prevent radioiodine uptake by the thyroid gland.

Molecular Weight

656.3000 g/mol

TPSA

212.00 Ų

Mechanism of Action

Contains a radioactive isotope that accumulates in specific tissues or organs, enabling detection and imaging of physiological processes or pathological conditions using nuclear medicine techniques.

Pharmacokinetics (PK)

Pharmacodynamics (PD)

Mechanism

Contains a radioactive isotope that accumulates in specific tissues or organs, enabling detection and imaging of physiological processes or pathological conditions using nuclear medicine techniques.

2D Structure

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SMILES

N=C(N)NCc1cccc([131I])c1.N=C(N)NCc1cccc([131I])c1.O=S(=O)(O)O

InChI

InChI=1S/2C8H10IN3.H2O4S/c2*9-7-3-1-2-6(4-7)5-12-8(10)11;1-5(2,3)4/h2*1-4H,5H2,(H4,10,11,12);(H2,1,2,3,4)/i2*9+4;

Molecular Formula

C16H22I2N6O4S

HBD / HBA

6 / 6

Rotatable Bonds

4

Heavy Atoms

29

No targets recorded

Target interaction data is not yet available for this drug.

No interactions recorded

Drug interaction data is not yet available for this compound.

No side effects recorded

Side effect data is not yet available for this drug.

Frequently Asked Questions

This radiolabeled compound is a targeted radiopharmaceutical approved for treating adults with advanced pheochromocytoma or paraganglioma that cannot be removed surgically. After intravenous injection, the compound is taken up by tumor cells, where the iodine-131 radioactivity delivers a lethal dose of radiation locally. Thyroid protective measures are required to prevent radioiodine uptake by the thyroid gland.

Contains a radioactive isotope that accumulates in specific tissues or organs, enabling detection and imaging of physiological processes or pathological conditions using nuclear medicine techniques.

Yes, Iobenguane Sulfate I 131 is an approved drug. It has reached clinical phase 4. It is classified as a Small molecule.

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References & Data Sources

  • ChEMBL — European Bioinformatics Institute (EBI). CHEMBL3989511. Open-access bioactivity database.
  • PubChem — National Center for Biotechnology Information (NCBI). CID 76971242. Chemical information database.

Data aggregated from publicly available pharmacological databases. Last updated 2026-03-04.

Medical Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making medication decisions.

Data sources: ChEMBL, PubChem, DailyMed.