Article · Wikipedia archive · Last revised Jul 3, 2026

Isoindene

Isoindene is a flammable polycyclic hydrocarbon with chemical formula C9H8. It is composed of a cyclohexadiene ring fused with a cyclopentadiene ring.

Last revised
Jul 3, 2026
Read time
≈ 1 min
Length
115 w
Citations
Source
Isoindene
Skeletal formula
Skeletal formula source ↗
Ball-and-stick model
Ball-and-stick model source ↗
Names
Preferred IUPAC name
2H-Indene
Other names
2H-Isoindene
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
UNII
  • InChI=1S/C9H8/c1-2-5-9-7-3-6-8(9)4-1/h1-2,4-7H,3H2 X markN
    Key: BQTJMKIHKULPCZ-UHFFFAOYSA-N X markN
  • InChI=1/C9H8/c1-2-5-9-7-3-6-8(9)4-1/h1-2,4-7H,3H2
    Key: BQTJMKIHKULPCZ-UHFFFAOYAS
  • C12=CCC=C1C=CC=C2
Properties
C9H8
Molar mass 116.163 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Isoindene is a flammable polycyclic hydrocarbon with chemical formula C9H8. It is composed of a cyclohexadiene ring fused with a cyclopentadiene ring.

See also

See also