Chemicals and Drugs

Selenium

An element with the atomic symbol Se, atomic number 34, and atomic weight 78.97. It is an essential micronutrient for mammals and other animals but is toxic in large amounts. Selenium protects intracellular structures against oxidative damage. It is an essential component of GLUTATHIONE PEROXIDASE.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

An element with the atomic symbol Se, atomic number 34, and atomic weight 78.97. It is an essential micronutrient for mammals and other animals but is toxic in large amounts. Selenium protects intracellular structures against oxidative damage. It is an essential component of GLUTATHIONE PEROXIDASE.

Chemical Identity

Chemical Information

Molecular Formula
Se
Molecular Weight
78.97 g/mol
CAS Registry No.
7782-49-2
IUPAC Name
selenium
InChIKey
BUGBHKTXTAQXES-UHFFFAOYSA-N
SMILES
[Se]
MeSH Unique ID
D012643
Source
PubChem CID 6326970

MeSH Record

Classification

Broader headings

Related Concepts

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Drug Class

Pharmacological Action

MeSH Record

See Also

MeSH Record

Synonyms

2 entry terms
  • Selenium-80
  • Selenium 80

MeSH Record

Aspects Covered

24 allowable subheadings

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

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Selenium. Medical Subject Headings (MeSH). 2026. Unique ID D012643. http://id.nlm.nih.gov/mesh/2026/D012643
  2. Selenium. In: Wikipedia. https://en.wikipedia.org/wiki/Selenium
  3. Selenium. In: Wikidata. https://www.wikidata.org/wiki/Q876
  4. Selenium. In: PubChem Compound. CID 6326970. https://pubchem.ncbi.nlm.nih.gov/compound/6326970