2-Pentyl-3-methyl-2-cyclopenten-1-one
Aroma Uses in Perfume- Product Name
- 2-Pentyl-3-methyl-2-cyclopenten-1-one
- CAS No.
- 1128-08-1
- Chemical Name
- 2-Pentyl-3-methyl-2-cyclopenten-1-one
- Synonyms
- FEMA 3763;DI JASMONE;DIHYDROJASMON;DIHYDROJASMONE;Jasmone, dihydro-;DIHYDROJASMONE(RG);Dihydrojasmone >Tetrahydroprethrone;DIHYDROJASMONE 98+%;Tetrahy-dropyrethrone
- CBNumber
- CB4487865
- Molecular Formula
- C11H18O
- Formula Weight
- 166.26
- MOL File
- 1128-08-1.mol
2-Pentyl-3-methyl-2-cyclopenten-1-one Property
- Boiling point:
- 120-121 °C12 mm Hg(lit.)
- Density
- 0.916 g/mL at 25 °C(lit.)
- refractive index
- n20/D 1.479(lit.)
- FEMA
- 3763 | 3-METHYL-2-(N-PENTANYL)-2-CYCLOPENTEN-1-ONE
- Flash point:
- 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
- biological source
- synthetic
- JECFA Number
- 1406
- BRN
- 1906471
- Major Application
- flavors and fragrances
- Cosmetics Ingredients Functions
- PERFUMING
- InChI
- 1S/C11H18O/c1-3-4-5-6-10-9(2)7-8-11(10)12/h3-8H2,1-2H3
- InChIKey
- YCIXWYOBMVNGTB-UHFFFAOYSA-N
- SMILES
- CCCCCC1=C(C)CCC1=O
- LogP
- 3.25
- CAS DataBase Reference
- 1128-08-1(CAS DataBase Reference)
- NIST Chemistry Reference
- Dihydrojasmone(1128-08-1)
- EPA Substance Registry System
- 2-Cyclopenten-1-one, 3-methyl-2-pentyl- (1128-08-1)
Safety
- WGK Germany
- 2
- RTECS
- GY7302000
- TSCA
- TSCA listed
- HS Code
- 29142990
- Storage Class
- 10 - Combustible liquids
- 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 and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H303May be harmfulif swallowed
- Precautionary statements
-
P270Do not eat, drink or smoke when using this product.
P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.
P403Store in a well-ventilated place.
N-Bromosuccinimide Price
- Product number
- W376302
- Product name
- Dihydrojasmone
- Purity
- ≥98%, stabilized, FG
- Packaging
- 1 unit
- Price
- $61.7
- Updated
- 2025/07/31
- Product number
- W376302
- Product name
- Dihydrojasmone
- Purity
- ≥98%, stabilized, FG
- Packaging
- 1 unit
- Price
- $61.7
- Updated
- 2025/07/31
- Product number
- W376302
- Product name
- Dihydrojasmone
- Purity
- ≥98%, stabilized, FG
- Packaging
- 100g
- Price
- $76.28
- Updated
- 2025/07/31
- Product number
- W376302
- Product name
- Dihydrojasmone
- Purity
- ≥98%, stabilized, FG
- Packaging
- 1kg
- Price
- $254
- Updated
- 2025/07/31
- Product number
- W376302
- Product name
- Dihydrojasmone
- Purity
- ≥98%, stabilized, FG
- Packaging
- 5kg
- Price
- $1120
- Updated
- 2025/07/31
2-Pentyl-3-methyl-2-cyclopenten-1-one Chemical Properties,Usage,Production
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.
Chemical Properties
3-Methyl-2-(n-pentanyl)-2-cyclopenten-1-one has a fresh, fruity, jasmine odor with woody and herbal nuances.
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.
Occurrence
Has apparently not been reported to occur in nature.
Uses
flavors and fragrances
Preparation
Hexyl bromide plus levulinic ester yields a lactone, which is reacted with polyphosphoric acid or phosphorus pentoxide to produce hydrojasmone.
Definition
ChEBI: 3-methyl-2-pentylcyclopent-2-en-1-one is a cyclic ketone.
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
2-Pentyl-3-methyl-2-cyclopenten-1-one Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 2-Pentyl-3-methyl-2-cyclopenten-1-one manufacturers
- Product
- 2-Pentyl-3-methyl-2-cyclopenten-1-one 1128-08-1
- Price
- US $1.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 10 mt
- Release date
- 2024-11-04
- Product
- DIHYDRO JASMONE 1128-08-1
- Price
- US $1.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 20tons
- Release date
- 2024-05-09
- Product
- 2-Pentyl-3-methyl-2-cyclopenten-1-one 1128-08-1
- Price
- US $0.00-0.00/kg
- Min. Order
- 1kg
- Purity
- 98%
- Supply Ability
- 10ton
- Release date
- 2024-07-23