Pentyl butyrate

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Amyl butyrate
Pentyl butyrate
CAS number 540-18-1 YesY
PubChem 10890
ChemSpider 10428
EC number 208-739-2
MeSH C046390
Jmol-3D images Image 1
Molecular formula C9H18O2
Molar mass 158.24 g/mol
Density 0.86 g/cm³
Melting point -73.2 °C
Boiling point 186 °C
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Amyl butyrate, also known as pentyl butyrate or pentyl butanoate, is an ester that is formed when pentanol is reacted with butyric acid,[1] usually in the presence of sulfuric acid as a catalyst. This ester has a smell reminiscent of pear or apricot. This chemical is used as an additive in cigarettes.


  1. ^ N-AMYL BUTYRATE, Cameo Chemicals, National Oceanic and Atmospheric Administration