Amyl nitrite

Amyl nitrite is a chemical compound with the formula C5H11ONO. A variety of isomers are known, but they all feature an amyl group attached to the nitrite functional group. The alkyl group is unreactive and the chemical and biological properties are mainly due to the nitrite group. Like other alkyl nitrites, amyl nitrite is bioactive in mammals, being a vasodilator, which is the basis of its use as a prescription medicine. As an inhalant, it also has a psychoactive effect, which has led to its recreational use, with its smell being described as that of old socks or dirty feet. It was first documented in 1844 and came into medical use in 1867.

Amyl nitrite
Clinical data
Other namesIsoamyl nitrite,
Isopentyl nitrite,
Nitramyl,
3-methyl-1-nitrosooxybutane,
Pentyl alcohol nitrite (ambiguous),
poppers (ambiguous, colloquial, slang)
ATC code
Legal status
Legal status
Identifiers
  • (3-methylbutyl) nitrite
CAS Number
PubChem CID
DrugBank
ChemSpider
UNII
KEGG
ChEBI
CompTox Dashboard (EPA)
Chemical and physical data
FormulaC5H11NO2
Molar mass117.148 g·mol−1
3D model (JSmol)
Density0.872 g/cm3
Boiling point99 °C (210 °F)
Solubility in waterSlightly soluble mg/mL (20 °C)
  • CC(C)CCON=O
  • InChI=1S/C5H11NO2/c1-5(2)3-4-8-6-7/h5H,3-4H2,1-2H3 Y
  • Key:OWFXIOWLTKNBAP-UHFFFAOYSA-N Y
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