Chemicals and Drugs

Lawrencium

A radioactive actinide discovered in 1961. It has the atomic symbol Lr, and atomic number 103. There are twelve isotopes with mass numbers 252–262 and 266.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A radioactive actinide discovered in 1961. It has the atomic symbol Lr, and atomic number 103. There are twelve isotopes with mass numbers 252–262 and 266.

Chemical Identity

Chemical Information

Molecular Formula
Lr
Molecular Weight
266.120 g/mol
CAS Registry No.
22537-19-5
IUPAC Name
lawrencium
InChIKey
CNQCVBJFEGMYDW-UHFFFAOYSA-N
SMILES
[Lr]
MeSH Unique ID
D007852
Source
PubChem CID 31192

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 Record

History Note

75

MeSH Record

Previous Indexing

  • Elements (1966-1974)

MeSH Hierarchy

Tree Numbers

  1. D01w.268w.271w.100w.500w
  2. D01w.268w.556w.423w
  3. D01w.268w.956w.295w
  4. D01w.496w.749.305w.100w.500w
  5. D01w.552w.020w.507w
  6. D01w.552w.544w.423w

AMA Style

References

  1. National Library of Medicine. Lawrencium. Medical Subject Headings (MeSH). 2026. Unique ID D007852. http://id.nlm.nih.gov/mesh/2026/D007852
  2. Lawrencium. In: Wikipedia. https://en.wikipedia.org/wiki/Lawrencium
  3. Lawrencium. In: Wikidata. https://www.wikidata.org/wiki/Q1905
  4. Lawrencium. In: PubChem Compound. CID 31192. https://pubchem.ncbi.nlm.nih.gov/compound/31192