2-Cyclopenten-1-one
- Product Name
- 2-Cyclopenten-1-one
- CAS No.
- 930-30-3
- Chemical Name
- 2-Cyclopenten-1-one
- Synonyms
- 2-CYCLOPENTEN-1-ONE;Cyclopentenone;CYCLOPENT-2-ENONE;2-CYCLOPENTENE-1-ONE;CPEO;2-CycL;NSC 73117;openten-1-one;2-CYCLOPENTENONE;Cyclopenten-3-one
- CBNumber
- CB3744099
- Molecular Formula
- C5H6O
- Formula Weight
- 82.1
- MOL File
- 930-30-3.mol
2-Cyclopenten-1-one Property
- Boiling point:
- 64-65 °C19 mm Hg(lit.)
- Density
- 0.98 g/mL at 25 °C(lit.)
- refractive index
- n20/D 1.481(lit.)
- Flash point:
- 108 °F
- storage temp.
- 2-8°C
- solubility
- soluble in Chloroform, Methanol
- form
- Liquid
- color
- Clear yellow
- Specific Gravity
- 0.980
- Water Solubility
- almost insoluble
- BRN
- 1446054
- InChI
- InChI=1S/C5H6O/c6-5-3-1-2-4-5/h1,3H,2,4H2
- InChIKey
- BZKFMUIJRXWWQK-UHFFFAOYSA-N
- SMILES
- C1(=O)CCC=C1
- LogP
- -0.114 (est)
- CAS DataBase Reference
- 930-30-3(CAS DataBase Reference)
- NIST Chemistry Reference
- 2-Cyclopenten-1-one(930-30-3)
Safety
- Hazard Codes
- Xi,Xn
- Risk Statements
- 10-37-36/37/38-22
- Safety Statements
- 16-36-36/37/39
- RIDADR
- UN 1224 3/PG 3
- WGK Germany
- 3
- F
- 8
- Hazard Note
- Irritant
- HazardClass
- 3
- PackingGroup
- III
- HS Code
- 29142990
- Storage Class
- 3 - Flammable liquids
- Hazard Classifications
- Flam. Liq. 3
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H226Flammable liquid and vapour
H335May cause respiratory irritation
- Precautionary statements
-
P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P233Keep container tightly closed.
P240Ground/bond container and receiving equipment.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P370+P378In case of fire: Use … for extinction.
P403+P235Store in a well-ventilated place. Keep cool.
P405Store locked up.
P501Dispose of contents/container to..…
N-Bromosuccinimide Price
- Product number
- C112909
- Product name
- 2-Cyclopenten-1-one
- Purity
- 98%
- Packaging
- 5g
- Price
- $84.6
- Updated
- 2025/07/31
- Product number
- C112909
- Product name
- 2-Cyclopenten-1-one
- Purity
- 98%
- Packaging
- 25g
- Price
- $201
- Updated
- 2025/07/31
- Product number
- C0794
- Product name
- 2-Cyclopenten-1-one
- Purity
- >96.0%(GC)
- Packaging
- 5mL
- Price
- $57
- Updated
- 2025/07/31
- Product number
- C0794
- Product name
- 2-Cyclopenten-1-one
- Purity
- >96.0%(GC)
- Packaging
- 25mL
- Price
- $198
- Updated
- 2025/07/31
- Product number
- C112909
- Product name
- 2-Cyclopenten-1-one
- Purity
- 98%
- Packaging
- 100g
- Price
- $613
- Updated
- 2025/07/31
2-Cyclopenten-1-one Chemical Properties,Usage,Production
Description
2-Cyclopentenone contains two functional groups, a ketone and an alkene. It is a colourless liquid. 2-cyclopenten-1-one selectively induces the expression of the 70-kDa HSP (HSP70) in human cells through cycloheximide-sensitive activation of heat shock transcription factor 1 (HSF1). It is a natural product found in Perilla frutescens[1].
Chemical Properties
clear yellow liquid
Uses
2-Cyclopenten-1-one is a versatile electrophile employed in various addition reactions including conjugate addition of organocopper nucleophiles, Michael reaction with silyl enol ethers and siloxanes. It is also used in Diels-Alder cycloadditions and phosphoniosilylations.
Definition
ChEBI: 2-cyclopenten-1-one is an enone that is cyclopentanone having a C=C double bond at position 2. It has a role as a Hsp70 inducer. It is an enone and an alicyclic ketone.
Preparation
2-Cyclopentenones can be synthesized in a number of ways. One of the routes involves elimination of α-bromo-cyclopentanone using lithium carbonate and Claisen condensation-decarboxylation-isomerization cascades of unsaturated diesters as shown below.
The acid-catalyzed dehydration of cyclopentanediols affords cyclopentenone.
As a functional group, the synthesis of 2-cyclopentenones is accomplished in a variety of other ways, including the Nazarov cyclization reaction from divinyl ketones, Saegusa–Ito oxidation from cyclopentanones, ring-closing metathesis from the corresponding dienes, oxidation of the corresponding cyclic allylic alcohols, and the Pauson–Khand reaction from alkenes, alkynes, and carbon monoxide.
en.wikipedia.org
References
[1] A Rossi, M G Santoro, G Elia. “2-Cyclopenten-1-one, a new inducer of heat shock protein 70 with antiviral activity.” The Journal of Biological Chemistry 271 50 (1996): 32192–6.
2-Cyclopenten-1-one Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from 2-Cyclopenten-1-one manufacturers
- Product
- 2-Cyclopentenone 930-30-3
- Price
- US $0.00-0.00/kg
- Min. Order
- 0.10000000149011612kg
- Purity
- 98%
- Supply Ability
- 100kg
- Release date
- 2023-03-08
- Product
- 2-Cyclopentenone 930-30-3
- Price
- US $0.00-0.00/kg
- Min. Order
- 0.10000000149011612kg
- Purity
- 98%
- Supply Ability
- 100kg
- Release date
- 2023-03-08
- Product
- 2-Cyclopentenone 930-30-3
- Price
- US $0.00/KG
- Min. Order
- 1KG
- Purity
- 97.9%
- Supply Ability
- 100 tons
- Release date
- 2022-02-21