Chemicals and Drugs

Lanthanum

The prototypical element in the rare earth family of metals. It has the atomic symbol La, atomic number 57, and atomic weight 138.91. Lanthanide ion is used in experimental biology as a calcium antagonist; lanthanum oxide improves the optical properties of glass.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The prototypical element in the rare earth family of metals. It has the atomic symbol La, atomic number 57, and atomic weight 138.91. Lanthanide ion is used in experimental biology as a calcium antagonist; lanthanum oxide improves the optical properties of glass.

Chemical Identity

Chemical Information

Molecular Formula
La
Molecular Weight
138.9055 g/mol
CAS Registry No.
7439-91-0
IUPAC Name
lanthanum
InChIKey
FZLIPJUXYLNCLC-UHFFFAOYSA-N
SMILES
[La]
MeSH Unique ID
D007811
Source
PubChem CID 23926

MeSH Record

Classification

Broader headings

Related Concepts

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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.500w
  2. D01w.552w.550w.399w.500w

AMA Style

References

  1. National Library of Medicine. Lanthanum. Medical Subject Headings (MeSH). 2026. Unique ID D007811. http://id.nlm.nih.gov/mesh/2026/D007811
  2. Lanthanum. In: Wikipedia. https://en.wikipedia.org/wiki/Lanthanum
  3. Lanthanum. In: Wikidata. https://www.wikidata.org/wiki/Q1801
  4. Lanthanum. In: PubChem Compound. CID 23926. https://pubchem.ncbi.nlm.nih.gov/compound/23926