Molekula
2-Cyclopenten-1-one
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
2-Cyclopenten-1-one is an unsaturated cyclic ketone widely used as a synthetic intermediate in organic chemistry, pharmaceuticals, and fragrance production. It serves as a key building block in the synthesis of complex molecules, including pheromones and biologically active compounds. CAS 930-30-3, molecular formula C5H6O, molecular weight 82.10 g/mol. Store at 2–8 °C. Signal word: Warning. Molekula supplies 2-Cyclopenten-1-one from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
Specifications available on request — see Documents below or contact our sales team.
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Flash Point | 42 °C |
| Transport Class | 3 |
| Packing Group | III |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 17921300 |
| CAS Number | 930-30-3 |
| IUPAC Name | cyclopent-2-en-1-one |
| EC Number | 213-213-0 |
| Molecular Formula | C5H6O |
| Molecular Weight | 82.10 |
| Exact Mass | 82.0419 |
| SMILES | C1CC(=O)C=C1 |
| InChIKey | BZKFMUIJRXWWQK-UHFFFAOYSA-N |
| InChI | InChI=1S/C5H6O/c6-5-3-1-2-4-5/h1,3H,2,4H2 |
| PubChem CID | 13588 |
| UN Number | UN1224 |
| REACH Code | Y110 |
| HTS Code | 29142950 |
| Tariff Code | 2914290090 |
Safety & GHS
-
Flammable
GHS02
-
Health Hazard
GHS07
Hazard statements
- H226 Flammable liquid and vapour
- H302 Harmful if swallowed
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- 2-Cyclopentene-1-one
- 2-Cyclopentenone
- 3-Cyclopenten-2-one
- cis-cyclopentenone
- cyclopent-2-en-1-one
- cyclopent-2-ene-1-one
- Cyclopent-2-enone
- Cyclopenten-2-one
- Cyclopenten-3-one
- Cyclopentenone
Frequently asked questions
What is 2-Cyclopenten-1-one commonly used for?
2-Cyclopenten-1-one is primarily used as a building block in organic synthesis, including the production of pharmaceuticals, agrochemicals, and fragrances. It’s also a key intermediate in the synthesis of cyclopentanone derivatives.
What is the chemical formula and molecular weight of 2-Cyclopenten-1-one?
The chemical formula is **C₅H₆O**, and the molecular weight is **82.10 g/mol**.
How should 2-Cyclopenten-1-one be stored?
Store at **2–8°C** in a cool, dry place, away from incompatible substances. Keep containers tightly sealed and protected from moisture.
What grades or purities of 2-Cyclopenten-1-one does Molekula supply?
Molekula supplies **analytical standard grade (≥98% purity)** and **synthetic grade (≥95% purity)**. Custom purities may be available upon request.
Can Molekula supply 2-Cyclopenten-1-one in bulk quantities?
Yes, we offer bulk quantities of 2-Cyclopenten-1-one, with flexible packaging options (drums, IBCs, or custom solutions) for large-volume orders.
What documentation is provided with an order of 2-Cyclopenten-1-one?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS/SDS)**, and **batch-specific documentation** for traceability. Additional certifications (e.g., REACH, FDA compliance) are available upon request.
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