Chemicals and Drugs

Americium

A completely man-made radioactive actinide with atomic symbol Am, and atomic number 95. Its valence can range from +3 to +6. Because of its nonmagnetic ground state, it is an excellent superconductor. It is also used in bone mineral analysis and as a radiation source for radiotherapy.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A completely man-made radioactive actinide with atomic symbol Am, and atomic number 95. Its valence can range from +3 to +6. Because of its nonmagnetic ground state, it is an excellent superconductor. It is also used in bone mineral analysis and as a radiation source for radiotherapy.

Chemical Identity

Chemical Information

Molecular Formula
Am
Molecular Weight
243.061380 g/mol
CAS Registry No.
7440-35-9
IUPAC Name
americium
InChIKey
LXQXZNRPTYVCNG-UHFFFAOYSA-N
SMILES
[Am]
MeSH Unique ID
D000576
Source
PubChem CID 23966

MeSH Record

Classification

Broader headings

Related Concepts

Knowledge Graph

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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.100w.050w
  2. D01w.268w.556w.037w
  3. D01w.496w.749.305w.100w.050w
  4. D01w.552w.020w.086w
  5. D01w.552w.544w.037w

AMA Style

References

  1. National Library of Medicine. Americium. Medical Subject Headings (MeSH). 2026. Unique ID D000576. http://id.nlm.nih.gov/mesh/2026/D000576
  2. Americium. In: Wikipedia. https://en.wikipedia.org/wiki/Americium
  3. Americium. In: Wikidata. https://www.wikidata.org/wiki/Q1872
  4. Americium. In: PubChem Compound. CID 23966. https://pubchem.ncbi.nlm.nih.gov/compound/23966