Wikipedia:  

Isoprene

Isoprene; beta-methylbivinyl; Isopentadiene; 3-Methyl-1,3-butadiene; beta-Methylbivinyl; 2-methyl-1,3-butadiene; isopentadiene; 1,3-butadiene, 2-methyl-; CH2=C(CH3)CH=CH2; 2-methyldivinyl; 2-Methylbutadiene
Molecular Formula
C5 H8
Natural Isotopic Abundance Mass
68.11702
Mono-Isotopic Molecular Masses
C12N14:   68.0626002568
C13N14:   73.0793744458
C12N15:   68.0626002568
C13N15:   73.0793744458
Isoprene image
Isoprene
InCHi String:
InChI=1S/C5H8/c1-4-5(2)3/h4H,1-2H2,3H3

canonical and isomeric SMILES:
CC(=C)C=C


PUBCHEM iupac NAME: PUBCHEM iupac CAS NAME: PUBCHEM iupac SYSTEMATIC NAME
2-methylbuta-1,3-diene

PUBCHEM iupac TRADITIONAL NAME: PUBCHEM iupac OPENEYE NAME
isoprene



PubChem Substance (SID):   126596884   24870237   11533712
PubChem Compound (CID):   6557
KEGG: Compound ID   C16521
CAS Registry IDs:   823271-95-0   78006-92-5   78-79-5
PDB Chemical Component   n/a
Miscellaneous Databases and IDs:   CAS 78-79-5   Beilstein Registry Number 969158   MDL number MFCD00008600   Sigma-Aldrich 464953_ALDRICH   EPA DSSTox 33586   ChEBI CHEBI:35194   HSDB 620   BioCyc CPD-9436   ChemIDplus 000078795   ChemSpider 13470775   EINECS 201-143-3   CCRIS 6253   NMRShiftDB 10016438   NIST Chemistry WebBook 459890044

Reference data were obtained primarily from the PubChem database.

Three dimensional molecular rendering uses Jmol.