Chemicals and Drugs

Astatine

Astatine. A radioactive halogen with the atomic symbol At, and atomic number 85. Its isotopes range in mass number from 200 to 219 and all have an extremely short half-life. Astatine may be of use in the treatment of hyperthyroidism because it emits ALPHA PARTICLES.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Astatine. A radioactive halogen with the atomic symbol At, and atomic number 85. Its isotopes range in mass number from 200 to 219 and all have an extremely short half-life. Astatine may be of use in the treatment of hyperthyroidism because it emits ALPHA PARTICLES.

Chemical Identity

Chemical Information

Molecular Formula
At
Molecular Weight
209.98715 g/mol
CAS Registry No.
20601-76-7
IUPAC Name
astatine
InChIKey
RYXHOMYVWAEKHL-UHFFFAOYSA-N
SMILES
[At]
MeSH Unique ID
D001246
Source
PubChem CID 5460479

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Aspects Covered

19 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, analysis, blood, cerebrospinal fluid, chemistry, classification, economics, history, isolation & purification, metabolism, pharmacokinetics, pharmacology, poisoning, standards, supply & distribution, therapeutic use, toxicity, urine.

MeSH Hierarchy

Tree Numbers

  1. D01w.268w.271w.110w
  2. D01w.268w.380w.075w
  3. D01w.496w.749.305w.110w

AMA Style

References

  1. National Library of Medicine. Astatine. Medical Subject Headings (MeSH). 2026. Unique ID D001246. http://id.nlm.nih.gov/mesh/2026/D001246
  2. Astatine. In: Wikipedia. https://en.wikipedia.org/wiki/Astatine
  3. Astatine. In: Wikidata. https://www.wikidata.org/wiki/Q999
  4. Astatine. In: PubChem Compound. CID 5460479. https://pubchem.ncbi.nlm.nih.gov/compound/5460479