Chemicals and Drugs

Arsenic

A shiny gray element with atomic symbol As, atomic number 33, and atomic weight 75. It occurs throughout the universe, mostly in the form of metallic arsenides. Most forms are toxic. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), arsenic and certain arsenic compounds have been listed as known carcinogens. (From Merck Index, 11th ed)

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A shiny gray element with atomic symbol As, atomic number 33, and atomic weight 75. It occurs throughout the universe, mostly in the form of metallic arsenides. Most forms are toxic. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), arsenic and certain arsenic compounds have been listed as known carcinogens. (From Merck Index, 11th ed)

Chemical Identity

Chemical Information

Molecular Formula
As
Molecular Weight
74.92159 g/mol
CAS Registry No.
7440-38-2
IUPAC Name
arsenic
InChIKey
RQNWIZPPADIBDY-UHFFFAOYSA-N
SMILES
[As]
MeSH Unique ID
D001151
Source
PubChem CID 5359596

MeSH Record

Classification

Broader headings

Related Concepts

Knowledge Graph

Loading graph…

Drag nodes to rearrange; hover to trace links; click a node to open its page.

MeSH Record

Synonyms

2 entry terms
  • Arsenic-75
  • Arsenic 75

MeSH Record

Aspects Covered

23 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, radiation effects, standards, supply & distribution, therapeutic use, toxicity, urine.

MeSH Hierarchy

Tree Number

MeSH Record

NLM Classification

QV 294

AMA Style

References

  1. National Library of Medicine. Arsenic. Medical Subject Headings (MeSH). 2026. Unique ID D001151. http://id.nlm.nih.gov/mesh/2026/D001151
  2. Arsenic. In: Wikipedia. https://en.wikipedia.org/wiki/Arsenic
  3. Arsenic. In: Wikidata. https://www.wikidata.org/wiki/Q871
  4. Arsenic. In: PubChem Compound. CID 5359596. https://pubchem.ncbi.nlm.nih.gov/compound/5359596