Chemicals and Drugs

Thulium

An element of the rare earth family of metals. It has the atomic symbol Tm, atomic number 69, and atomic weight 168.93.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

An element of the rare earth family of metals. It has the atomic symbol Tm, atomic number 69, and atomic weight 168.93.

Chemical Identity

Chemical Information

Molecular Formula
Tm
Molecular Weight
168.93422 g/mol
CAS Registry No.
7440-30-4
IUPAC Name
thulium
InChIKey
FRNOGLGSGLTDKL-UHFFFAOYSA-N
SMILES
[Tm]
MeSH Unique ID
D013932
Source
PubChem CID 23961

MeSH Record

Classification

Broader headings

Related Concepts

Knowledge Graph

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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

  1. D01w.268w.558w.362w.984w
  2. D01w.552w.550w.399w.984w

AMA Style

References

  1. National Library of Medicine. Thulium. Medical Subject Headings (MeSH). 2026. Unique ID D013932. http://id.nlm.nih.gov/mesh/2026/D013932
  2. Thulium. In: Wikipedia. https://en.wikipedia.org/wiki/Thulium
  3. Thulium. In: Wikidata. https://www.wikidata.org/wiki/Q1853
  4. Thulium. In: PubChem Compound. CID 23961. https://pubchem.ncbi.nlm.nih.gov/compound/23961