Chemical Component Summary

Identifiers molecular oxygen
Formula O2
Molecular Weight 32.00 g/mol
Type non-polymer
Isomeric SMILES O=O
InChI InChI=1S/O2/c1-2

Chemical Details

Formal Charge 0
Atom Count 2
Chiral Atom Count 0
Chiral Atoms
Bond Count 1
Aromatic Bond Count 0

Drug Info: DrugBank

DrugBank ID DB09140   (Stereoisomeric match)
Name Oxygen
  • approved
  • vet_approved
Description Oxygen is a chemical element with symbol O and atomic number 8. Uptake of oxygen from the air is the essential purpose of respiration, so oxygen supplementation is used in medicine. Treatment not only increases oxygen levels in the patient's blood, but has the secondary effect of decreasing resistance to blood flow in many types of diseased lungs, easing work load on the heart. Oxygen therapy is used to treat emphysema, pneumonia, some heart disorders (congestive heart failure), some disorders that cause increased pulmonary artery pressure, and any disease that impairs the body's ability to take up and use gaseous oxygen.
Brand Names
  • Air
  • Air Compressed
  • Air Compressed Medical Air
  • Air USP
  • Air, Compressed
Route of administration
  • Cutaneous; Respiratory (inhalation)
  • Nasal
  • Nasal; Oral
  • Nasal; Respiratory (inhalation)
  • Rectal
  • Chalcogens
  • Elements
  • Gases
  • Inorganic Chemicals
  • Medical Gases
ATC-Code V03AN01
CAS number 7782-44-7
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS. Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID: 21059682