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-CYCLOPENTENONE;2-CYCLOPENTENE-1-ONE;CPEO;2-CycL;NSC 73117;openten-1-one;cyclopenten-2-one
- CBNumber:
- CB3744099
- Molecular Formula:
- C5H6O
- Molecular Weight:
- 82.1
- MDL Number:
- MFCD00001401
- MOL File:
- 930-30-3.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Boiling point | 64-65 °C19 mm Hg(lit.) |
|---|---|
| Density | 0.98 g/mL at 25 °C(lit.) |
| refractive index |
n |
| 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) |
| EWG's Food Scores | 1 |
| FDA UNII | Q0U2IGF9CK |
| NIST Chemistry Reference | 2-Cyclopenten-1-one(930-30-3) |
| UNSPSC Code | 12352100 |
| NACRES | NA.22 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS02,GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H335-H226 | |||||||||
| Precautionary statements | P261-P280a-P405-P501a-P210-P233-P240-P241+P242+P243-P280-P303+P361+P353-P370+P378-P403+P235-P501 | |||||||||
| PPE | Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter | |||||||||
| 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 | |||||||||
| Limited Quantities | 5.0 L (1.3 gallons) (liquid) | |||||||||
| Excepted Quantities | Max Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L) | |||||||||
| NFPA 704 |
|
2-Cyclopenten-1-one price More Price(76)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | C112909 | 2-Cyclopenten-1-one 98% | 930-30-3 | 5g | $90.1 | 2026-04-30 | Buy |
| Sigma-Aldrich | C112909 | 2-Cyclopenten-1-one 98% | 930-30-3 | 25g | $214 | 2026-04-30 | Buy |
| TCI Chemical | C0794 | 2-Cyclopenten-1-one >96.0%(GC) | 930-30-3 | 5mL | $57 | 2026-04-30 | Buy |
| TCI Chemical | C0794 | 2-Cyclopenten-1-one >96.0%(GC) | 930-30-3 | 25mL | $198 | 2026-04-30 | Buy |
| Usbiological | 269244 | 2-Cyclopenten-1-one Asreported | 930-30-3 | 5g | $333 | 2026-06-03 | Buy |
2-Cyclopenten-1-one Chemical Properties, Uses, 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
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Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| HuBei VernalBay Biopharmaceutical Co., Ltd. | 17371337933 17371337933 | 3495784513@qq.com | China | 20 | 58 |
| Shanghai Harvest Chemical Industrial Co., Ltd. | 15721252604 17321035817 | sales@harvest-chem.com | China | 2829 | 64 |
| Beijing Taiya Jie Technology Development Co., Ltd. | 021-33690831-8001 13552411790;18616022633 | postmaster@tyjchem.cn | China | 1541 | 55 |
| Chongqing Xingcan Pharmaceutical Technology Co., Ltd. | 13594048950 19923294409 | xingcanyaoye@sina.com | China | 1591 | 58 |
| Aikon International Limited | 17714375163 | hywu@aikonchem.com | China | 9974 | 58 |
| BTC Pharmaceutical CO. Ltd | +86-15716293042 15716293042 | info@btcpharm.com | China | 822 | 55 |
| Shandong Ruihua Fluoride Industry Co., Ltd | 530-6233885-001 05306238006 | ruihuafluoride@rhfuye.com | China | 20 | 58 |
| J & K SCIENTIFIC LTD. | 18210857532 18210857532 | jkinfo@jkchemical.com | China | 96815 | 76 |
| INTATRADE GmbH | +49 3493/605464 | sales@intatrade.de | Germany | 3563 | 66 |
| 3B Pharmachem (Wuhan) International Co.,Ltd. | 18930552037 | 3bsc@sina.com | China | 15813 | 69 |
Related articles
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- Mar 26,2025
View Latest Price from 2-Cyclopenten-1-one manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2023-12-04 | 2-Cyclopentenone
930-30-3
|
98% | 100kg | Huida Pharmaceutical Technology (Shanghai) Co., Ltd. | |||
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|
2023-12-04 | 2-Cyclopentenone
930-30-3
|
98% | 100kg | Huida Pharmaceutical Technology (Shanghai) Co., Ltd. | |||
 |
2022-02-22 | 2-Cyclopentenone
930-30-3
|
1KG | 97.9% | 100 tons | Honest Joy Holdings Limited |
-
- 2-Cyclopentenone
930-30-3
- 98%
- Huida Pharmaceutical Technology (Shanghai) Co., Ltd.
-
- 2-Cyclopentenone
930-30-3
- 98%
- Huida Pharmaceutical Technology (Shanghai) Co., Ltd.
-
- 2-Cyclopentenone
930-30-3
- $0.00
- 97.9%
- Honest Joy Holdings Limited
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