ChemicalBook > CAS DataBase List > 2-Pentyl-3-methyl-2-cyclopenten-1-one
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
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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
- Specific Gravity
- 0.914～0.916 (20/4℃)
- color
- A colourless, slightly oily liquid with a floral-like odour
- 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
- 2-Cyclopenten-1-one, 3-methyl-2-pentyl- (1128-08-1)
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Safety
- 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).
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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.
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N-Bromosuccinimide Price
Sigma-Aldrich
- Product number
- W376302
- Product name
- Dihydrojasmone
- Purity
- ≥98%, stabilized, FG
- Packaging
- sample-k
- Price
- $59.8
- Updated
- 2024/03/01
Sigma-Aldrich
- Product number
- W376302
- Product name
- Dihydrojasmone
- Purity
- ≥98%, stabilized, FG
- Packaging
- 100g
- Price
- $77.7
- Updated
- 2024/03/01
Sigma-Aldrich
- Product number
- W376302
- Product name
- Dihydrojasmone
- Purity
- ≥98%, stabilized, FG
- Packaging
- 1kg
- Price
- $246
- Updated
- 2024/03/01
Sigma-Aldrich
- Product number
- W376302
- Product name
- Dihydrojasmone
- Purity
- ≥98%, stabilized, FG
- Packaging
- 5kg
- Price
- $1120
- Updated
- 2024/03/01
TCI Chemical
- Product number
- D1440
- Product name
- Dihydrojasmone
- Purity
- >98.0%(GC)
- Packaging
- 25mL
- Price
- $27
- Updated
- 2024/03/01
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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
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.
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
Hebei Weibang Biotechnology Co., Ltd
- 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
Hebei Yanxi Chemical Co., Ltd.
- Product
- DIHYDRO JASMONE 1128-08-1
- Price
- US $1.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 20tons
- Release date
- 2024-05-09
JINING XINHE CHEMICAL CO., LTD
- 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
1128-08-1, 2-Pentyl-3-methyl-2-cyclopenten-1-oneRelated Search:
2-METHYL-2-CYCLOPENTEN-1-ONE
2-Pentyl-3-methyl-2-cyclopenten-1-one
2-Cyclopenten-1-one
DIHYDROJASMONE LACTONE
DIHYDROJASMONE
Methyl dihydrojasmonate
3-methylcyclopent-2-en-1-one
PROSTAGLANDIN B1
2-PENTYL-2-CYCLOPENTEN-1-ONE
1-ETHYL-2-METHYLCYCLOPENTENE
1-Methylcyclopentene
3-NONANONE
Jasmone
1-BUTYLCYCLOPENTENE
1,2-DIMETHYLCYCLOPENTENE
1-ETHYL-1-CYCLOPENTENE
2,3-DIMETHYL-2-CYCLOPENTEN-1-ONE
di-Calciphor