2-Piperidone
Also known as: 2-Piperidinone, δ-Valerolactam, Delta-valerolactam, Piperidin-2-one, 2-Ketopiperidine, 2-Azacyclohexanone, 5-Pentanolactam, 5-pentanelactam, Valerolactam, Piperidon, Piperidone-2, Pentanoic acid, 5-amino-, lactam
2-Piperidone (CAS 675-20-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H9NO and a molecular weight of 99.131 g/mol. Key properties include a melting point of 38-40 °C(lit.), a boiling point of 256-262 ºC, a density of 1.073 and a flash point of 147 ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 675-20-7
- Jingsj CID
- J-1003142-2
- Molecular Formula
- C5H9NO
- Molecular Weight
- 99.131 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 38-40 °C(lit.) |
|---|---|
| Boiling Point | 256-262 ºC |
| Density | 1.073 |
| Flash Point | 147 ºC |
| Exact Mass | 99.068413 |
| PSA | 29.10000 |
| LogP | -0.45 |
| Vapor Pressure | 0.1±0.9 mmHg at 25°C |
| Refractive Index | 1.539 |
| Additional Property | 291 g/L (25 ºC) |
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|
Customs & Trade Information
| HS Code | 2933790090 |
|---|---|
| Summary | 2933790090. other lactams. VAT:17.0%. Tax rebate rate:9.0%. . MFN tariff:9.0%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 2-Piperidone?
The CAS number of 2-Piperidone is 675-20-7.
What are the molecular formula and molecular weight of 2-Piperidone?
2-Piperidone has molecular formula C5H9NO and molecular weight 99.131 g/mol.
What are the upstream and downstream products of 2-Piperidone?
For 2-Piperidone, Upstream Products: Cyclopentanone, 5-Amino-1-pentanol, Cyclopentanone oxime; Downstream Products: Benzyl 2-oxopiperidine-1-carboxylate, 1-(4-Nitrophenyl)-2-piperidinone, Ethyl 1-(4-methoxyphenyl)-7-oxo-6-[4-(2-oxopiperidin-1-yl)phenyl]-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxylate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "2-Piperidone (CAS 675-20-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1003142-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.