| Identification | More | [Name]
2-Pentyl-3-methyl-2-cyclopenten-1-one | [CAS]
1128-08-1 | [Synonyms]
2-N-AMYL-3-METHYL-2-CYCLOPENTEN-1-ONE
2-PENTYL-3-METHYL-2-CYCLOPENTEN-1-ONE
3-METHYL-2-PENTYL-2-CYCLOPENTEN-1-ONE
3-METHYL-2-PENTYL-2-CYCLOPENTENONE
DIHYDROJASMONE
DI JASMONE
FEMA 3763
JASMONE
METHYL PENTYL CYCLOPENTEN-2-ONE
2-Cyclopenten-1-one, 3-methyl-2-pentyl-
2-Cyclopenten-1-one,3-methyl-2-pentyl-
2-n-Pentyl-3-methyl-2-cyclopenten-1-one
3-Methyl-2-(n-pentanyl)-2-cyclopenten-1-one
3-methyl-2-pentyl-2-cyclopenten-1-on
3-methyl-2-pentylcyclopent
Jasmone, dihydro-
Tetrahy-dropyrethrone
3-methyl-2-pentylcyclopent-2-enone
3-Methyl-2-(2-penten-1-yl)-2-cyclopentene
DIHYDROJASMONE 98+% | [EINECS(EC#)]
214-434-5 | [Molecular Formula]
C11H18O | [MDL Number]
MFCD00036480 | [Molecular Weight]
166.26 | [MOL File]
1128-08-1.mol |
| Chemical Properties | Back Directory | [Boiling point ]
120-121 °C12 mm Hg(lit.) | [density ]
0.916 g/mL at 25 °C(lit.)
| [FEMA ]
3763 | [refractive index ]
n20/D 1.479(lit.)
| [Fp ]
230 °F
| [storage temp. ]
Store at -20°C | [solubility ]
DMSO:100.0(Max Conc. mg/mL);601.45(Max Conc. mM) | [form ]
clear liquid | [color ]
A colourless, slightly oily liquid with a floral-like odour | [Specific Gravity]
0.914～0.916 (20/4℃) | [Odor]
at 100.00 %. fresh outdoor jasmin myrrh woody spice herbal | [Odor Type]
floral | [JECFA Number]
1406 | [BRN ]
1906471 | [LogP]
3.25 | [CAS DataBase Reference]
1128-08-1(CAS DataBase Reference) | [NIST Chemistry Reference]
Dihydrojasmone(1128-08-1) | [EPA Substance Registry System]
1128-08-1(EPA Substance) |
| Safety Data | Back Directory | [WGK Germany ]
2
| [RTECS ]
GY7302000
| [TSCA ]
Yes | [HS Code ]
29142990 | [Toxicity]
The acute oral LD50 in rats was reported as 2.5 g/kg (1.79-3.50 g/kg) (Keating, 1972). The acute dermal LD50 value in rabbits was reported as 5 g/kg (Keating, 1972). |
| Hazard Information | Back Directory | [Chemical Properties]
2-Pentyl-3-methyl-2-cyclopenten-1-one is a colorless,
slightly viscous liquid with a typical jasmine odor, resembling that of the naturally
occurring (Z)-jasmone. Dihydrojasmone is produced by an acid-catalyzed
rearrangement of 4-methyl-??-decalactone, which is readily obtained by
radical addition of 2-octanol to acrylic acid.
Dihydrojasmone is used in perfumery in jasmine bases and, more generally, in
floral and fruity fragrances. | [Chemical Properties]
3-Methyl-2-(n-pentanyl)-2-cyclopenten-1-one has a fresh, fruity, jasmine odor with woody and herbal nuances. | [Occurrence]
Has apparently not been reported to occur in nature. | [Definition]
ChEBI: 3-methyl-2-pentylcyclopent-2-en-1-one is a cyclic ketone. | [Preparation]
Hexyl bromide plus levulinic ester yields a lactone, which is reacted with polyphosphoric acid or phosphorus pentoxide
to produce hydrojasmone. | [Taste threshold values]
Taste characteristics at 10 ppm: sweet, floral, green, herbal with a citrus nuance. | [Synthesis Reference(s)]
Canadian Journal of Chemistry, 56, p. 2301, 1978 DOI: 10.1139/v78-379
Journal of the American Chemical Society, 92, p. 7428, 1970 DOI: 10.1021/ja00728a029 |
| Questions And Answer | Back Directory | [Aroma]
Intensely floral and fresh odor with fruity
and somewhat Myrrh-like undertone. 2-Pentyl-3-methyl-2-cyclopenten-1-one is
often described as the "closest to ci&Jasmone
in odor". In proper dilution it has a pleasant,
sweet, herbaceous-floral taste which is easily twisted towards a fruity note in presence of
traces of fruity chemicals. It has an excellent
softening effect upon the overly "chemical"
fruit materials. | [Uses in Perfume]
2-Pentyl-3-methyl-2-cyclopenten-1-one is widely used in perfume compositions, not
only for artificial Jasmin and Bergamot, but
in general as a floralizer in the more fruityfloral fragrance types: Ylang, Lily, Tuberose,
Magnolia, etc. and it introduces a pleasant
undertone in Citrus type fragrances. |
|
|