2-CYCLOPENTYLIDENECYCLOPENTANONE
- CAS No.
- 825-25-2
- Chemical Name:
- 2-CYCLOPENTYLIDENECYCLOPENTANONE
- Synonyms
- Loxoprofen Impurity 61;Bicyclopentyliden-2-one;BICYCLOPENTYLIDENE-2-ONE;Δ1,1'-Bicyclopentane-2-one;Δ1,1'-Bi[cyclopentane]-2-one;2-CYCLOPENTYLIDENECYCLOPENTANONE;1,1'-Bi(cyclopentylidene)]-2-one;cyclopentylidenecyclopentan-2-one;Cyclopentanone,2-cyclopentylidene-;2-CYCLOPENTYLIDENE-1-CYCLOPENTANONE
- CBNumber:
- CB7476912
- Molecular Formula:
- C10H14O
- Molecular Weight:
- 150.22
- MDL Number:
- MFCD00044678
- MOL File:
- 825-25-2.mol
- MSDS File:
- SDS
| Product description | Number | Pack Size | Price |
| BICYCLOPENTYLIDENE-2-ONE AldrichCPR | R238295 | 1 unit | $197 |
| BICYCLOPENTYLIDENE-2-ONE Aldrich | R238295 | 25mg | $179 |
| 2-Cyclopentylidenecyclopentan-1-one | AAA82525 | 0.5g | $475 |
| 2-Cyclopentylidenecyclopentan-1-one | AAA82525 | 5g | $1812.5 |
| [1,1'-Bi(cyclopentylidene)]-2-one 95% | B92292 | 100mg | $80 |
| Melting point | 74-75 °C |
|---|---|
| Boiling point | 231.78°C (rough estimate) |
| Density | 1 g/cm3 |
| refractive index | 1.5215 (estimate) |
| Flash point | 104°C |
| storage temp. | 2-8°C, protect from light |
| Appearance | Colorless to light yellow Liquid |
| InChI | InChI=1S/C10H14O/c11-10-7-3-6-9(10)8-4-1-2-5-8/h1-7H2 |
| InChIKey | NYSYNXRPXJZYFY-UHFFFAOYSA-N |
| SMILES | C1(=O)CCC/C/1=C1\CCCC\1 |
| FDA UNII | 7ALH95T3QJ |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|---|---|
| Signal word | Warning |
| Hazard statements | H315 |
| Precautionary statements | P264-P280-P302+P352-P321-P332+P313-P362 |
| REACH Registrations | Active |
2-CYCLOPENTYLIDENECYCLOPENTANONE price More Price(21)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | R238295 | BICYCLOPENTYLIDENE-2-ONE AldrichCPR | 825-25-2 | 1 unit | $197 | 2026-04-30 | Buy |
| Sigma-Aldrich | R238295 | BICYCLOPENTYLIDENE-2-ONE Aldrich | 825-25-2 | 25mg | $179 | 2024-03-01 | Buy |
| Biosynth | AAA82525 | 2-Cyclopentylidenecyclopentan-1-one | 825-25-2 | 0.5g | $475 | 2026-06-04 | Buy |
| Biosynth | AAA82525 | 2-Cyclopentylidenecyclopentan-1-one | 825-25-2 | 5g | $1812.5 | 2026-06-04 | Buy |
| Synthonix | B92292 | [1,1'-Bi(cyclopentylidene)]-2-one 95% | 825-25-2 | 100mg | $80 | 2026-05-06 | Buy |
2-CYCLOPENTYLIDENECYCLOPENTANONE Chemical Properties,Uses,Production
Uses
Bicyclopentylidene-2-one is derived from Cyclopentanone (C988395), which is a chemical compound used in the synthesis of various simple and complex organic compounds. Also, it is used in the synthesis of peptidase IV inhibitors for the treatment of type 2 diabetes.
Synthesis Reference(s)
The Journal of Organic Chemistry, 39, p. 1028, 1974 DOI: 10.1021/jo00922a002
Synthesis
The synthesis of 2-cyclopentylidenecyclopentanone is a classic example of a self-condensation reaction, specifically an aldol condensation followed by dehydration. Under basic or acidic conditions, one molecule of cyclopentanone (C?H?O) is converted into its enolate, which nucleophilically attacks the carbonyl group of a second cyclopentanone molecule. The resulting β-hydroxy ketone intermediate undergoes dehydration to yield the α,β-unsaturated ketone product. Industrially, such transformations are often conducted under heterogeneous catalysis using solid acid–base bifunctional catalysts (e.g., Mg–Al hydrotalcites or mixed metal oxides) to improve selectivity and enable continuous-flow operation. The product is of interest as a model intermediate for high-density fuel candidates and has been explored in fragrance chemistry for its woody, amber-like odor.
2-CYCLOPENTYLIDENECYCLOPENTANONE Preparation Products And Raw materials
Raw materials
Preparation Products
2-CYCLOPENTYLIDENECYCLOPENTANONE Suppliers
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Guangzhou Tosun Pharmaceutical Ltd | +86-020-61855200-902 +8618124244216 | info@upharm.cn | China | 897 | 58 |
| ANHUI WITOP BIOTECH CO., LTD | +8615255079626 | eric@witopchemical.com | China | 23541 | 58 |
| Hu Bei Jiutian Bio-medical Technology CO.,Ltd | 027-88013699 17354350817 | Ryan@jiutian-bio.com | China | 5945 | 58 |
| Shenzhen Excellent Biomedical Technology Co.,Ltd. | +86-0755-26050679 15915472436 | sale@ex-biotech.cn | China | 1023 | 58 |
| Shanghai Acmec Biochemical Technology Co., Ltd. | +86-18621343501; +undefined18621343501 | product@acmec-e.com | China | 33324 | 58 |
| ShenZhen H&D Pharmaceutical Technology Co., LTD | +8618627948422 | sale@hdimpurity.com | China | 3681 | 58 |
| SHANGHAI KEAN TECHNOLOGY CO., LTD. | +8613817748580 | cooperation@kean-chem.com | China | 40066 | 58 |
| XIAMEN AMITY INDUSTRY AND TRADE CO., LTD. | +8618950047208 | ellena@amitychem.com | China | 43414 | 58 |
| QUALITY CONTROL SOLUTIONS LTD. | +86-0755-66853366 +8613670046396 | export03@qcsrm.com | China | 24342 | 58 |
| Shanghai Macklin Biochemical Co.,Ltd. | 50706066 15221275939 | shenlinxing@macklin.cn | China | 14850 | 58 |
View Lastest Price from 2-CYCLOPENTYLIDENECYCLOPENTANONE manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-03-12 | Loxoprofen Impurity 61 | 10mg | 0.98 | 10g | ShenZhen H&D Pharmaceutical Technology Co., LTD | ||
 |
2025-12-19 | Loxoprofen Impurity 61 | 5mg | 95%+ | 1000mg | Guangzhou Tosun Pharmaceutical Ltd |
-
- Loxoprofen Impurity 61
- 0.98
- ShenZhen H&D Pharmaceutical Technology Co., LTD
-
- Loxoprofen Impurity 61
- 95%+
- Guangzhou Tosun Pharmaceutical Ltd
