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M100005

Sigma-Aldrich

Myrcene

technical grade

Synonym(s):

β-Myrcene, 7-Methyl-3-methylene-1,6-octadiene

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About This Item

Linear Formula:
H2C=CHC(=CH2)CH2CH2CH=C(CH3)2
CAS Number:
Molecular Weight:
136.23
Beilstein:
1719990
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

grade

technical grade

vapor density

4.7 (vs air)

vapor pressure

~7 mmHg ( 20 °C)

contains

0.1% alpha-tocopherol

refractive index

n20/D 1.469 (lit.)

bp

167 °C (lit.)

solubility

water: soluble 0.00109 g/L at 20 °C

density

0.791 g/mL at 25 °C (lit.)

storage temp.

−20°C

SMILES string

C\C(C)=C/CCC(=C)C=C

InChI

1S/C10H16/c1-5-10(4)8-6-7-9(2)3/h5,7H,1,4,6,8H2,2-3H3

InChI key

UAHWPYUMFXYFJY-UHFFFAOYSA-N

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General description

Myrcene is a monoterpene. Males of Ips spp. produced the pheromones ipsdienol (2-methyl-6-methylene-2,7-octadien-4-ol) and/or ipsenol (2-methyl-6-methylene-7-octen-4-ol) on exposure to the vapours of myrcene. Myrcene serves as a precursor for terpene alcohols. Myrcene is a constituent of the beetle′s host, ponderosapine. Hydrogenation of myrcene catalyzed by Ru, Cr, Ir and Rh complexes yields a complex mixture of mono-, di- and trihydrogenated products.

Application

Myrcene is the suitable synthetic standard used in the identification of E-myrcenol (2-methyl-6-methylene-E-2,7-octadien-1-01) as a major hindgut constituent in Eurasian bark beetle Ips duplicatus by GC-MS.

Signal Word

Danger

Hazard Statements

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

111.2 °F - closed cup

Flash Point(C)

44 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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W D Bedard et al.
Science (New York, N.Y.), 164(3885), 1284-1285 (1969-06-13)
In the field, both sexes of the western pine beetle, Dendroctonus brevicomis, are attracted by the female-produced bicyclic ketal exo-brevicomin; this response is enhanced by myrcene (a constituent of the beetle's host, ponderosapine), which is not an attractant by itself.
Selective hydrogenation of myrcene catalyzed by complexes of ruthenium, chromium, iridium and rhodium.
Speziali MG, et al.
J. Mol. Catal. A: Chem., 239(1), 10-14 (2005)
E-myrcenol inIps duplicatus: An aggregation pheromone component new for bark beetles.
Byers JA, et al.
Experientia, 46(11-12), 1209-1211 (1990)
Myrcene: a precursor of pheromones in Ips beetles.
P R Hughes
Journal of insect physiology, 20(7), 1274-1275 (1974-07-01)
Johannes Stökl et al.
Proceedings. Biological sciences, 278(1709), 1216-1222 (2010-10-15)
Most insects are dependent on chemical communication for activities such as mate finding or host location. Several plants, and especially orchids, mimic insect semiochemicals to attract insects for unrewarded pollination. Here, we present a new case of pheromone mimicry found

Protocols

Fast GC analysis of sweet orange essential oil in hexane. Key components identified includes: β-Farnesene; α-Huµlene; Germacrene D; (+)-Valencene; Bicyclogermacrene; (+)-δ-Cadinene

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