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2-Pentyl-3-methyl-2-cyclopenten-1-one

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

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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2-Pentyl-3-methyl-2-cyclopenten-1-one Suppliers

J & K SCIENTIFIC LTD.
Tel
010-82848833 400-666-7788
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86-10-82849933
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jkinfo@jkchemical.com
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China
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Meryer (Shanghai) Chemical Technology Co., Ltd.
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4006608290; 18621169109
Fax
86-21-61259102
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market03@meryer.com
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China
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Alfa Aesar
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400-6106006
Fax
021-67582001/03/05
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saleschina@alfa-asia.com
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China
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TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
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Sales-CN@TCIchemicals.com
Country
China
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Energy Chemical
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021-021-58432009 400-005-6266
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sales8178@energy-chemical.com
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jiliang chemicals
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021 61153784
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bidingchem@163.com
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China
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Syntechem Co.,Ltd
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Fax
E-Mail Inquiry
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info@syntechem.com
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China
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Tianjin heowns Biochemical Technology Co., Ltd.
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400 638 7771
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sales@heowns.com
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Chengdu Ai Keda Chemical Technology Co., Ltd.
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4008-755-333 18080918076
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028-86757656
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800078821@qq.com
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China
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Shanghai T&W Pharmaceutical Co., Ltd.
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+86 21 61551611
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+86 21 50676805
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China
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View Lastest Price from 2-Pentyl-3-methyl-2-cyclopenten-1-one manufacturers

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
2023-09-06
Hebei Yibangte Import and Export 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
99%
Supply Ability
50000kg
Release date
2023-11-01
Hebei Mojin Biotechnology Co., Ltd
Product
2-Pentyl-3-methyl-2-cyclopenten-1-one 1128-08-1
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
50000KG/month
Release date
2023-07-04

1128-08-1, 2-Pentyl-3-methyl-2-cyclopenten-1-oneRelated Search:


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  • 2-Pentyl-3-Methyl-2-Cyclopenten-1-One CAS 1128-08-1
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