Butyl ester

Butyl nitrite

Clinical data
ATC code	none
Identifiers
IUPAC name 1-nitrosooxybutane
CAS Number	544-16-1 Y
PubChem CID	10996
ChemSpider	10530 Y
ECHA InfoCard	100.008.057
Chemical and physical data
Formula	C4H9NO2
Molar mass	103.12
3D model (Jmol)	Interactive image
SMILES CCCCON=O
InChI InChI=1S/C4H9NO2/c1-2-3-4-7-5-6/h2-4H2,1H3 Y Key:JQJPBYFTQAANLE-UHFFFAOYSA-N Y

Butyl nitrite is an alkyl nitrite made from n-butanol. Butyl nitrite is used recreationally as poppers.

Synonyms include 1-butyl nitrite and nitrous acid, butyl ester.

It can be prepared by reacting nitrous acid (generated in situ by reacting a metal nitrite with a mineral acid) with n-butanol.

Butyl nitrite is highly flammable.

Butyl nitrite is one of the compounds used as poppers, an inhalant drug that induces a brief euphoria. Among the inhalant's common street names are "liquid rush" (or just "rush") and "locker room." It is sometimes marketed as "liquid incense."