Α-Myrcene

α-Myrcene is a monoterpene that is an uncommon^[1] isomer of β-myrcene. It has been found in the essential oils of a few species, such as the Balkan Pine^[2] and lemongrass.^[3]

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α-Myrcene

Names
IUPAC name 2-Methyl-6-methylideneocta-1,7-diene
Other names alpha-Myrcene
Identifiers
CAS Number	1686-30-2
3D model (JSmol)	Interactive image
ChemSpider	452986
PubChem CID	519324
CompTox Dashboard (EPA)	DTXSID50333971
InChI InChI=1S/C10H16/c1-5-10(4)8-6-7-9(2)3/h5H,1-2,4,6-8H2,3H3 Key: VYBREYKSZAROCT-UHFFFAOYSA-N
SMILES C=CC(=C)CCCC(=C)C
Properties
Chemical formula	C10H16
Molar mass	136.238 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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It differs from the β isomer by the position of one of the three alkene units. The two chemicals can be synthesized in a 3:1 α:β isomeric ratio by pyrolysis of the acetate ester of myrcenol.^[4]