1-Acetylimidazolidin-2-one
Also known as: 1-Acetyl-2-imidazolidinone, 1-Acetyl-imidazolidin-2-one, 1-ethanoylimidazolidin-2-one, 2-Imidazolidinone, 1-acetyl-, Acetylimidazo-2-one, Clonidine Impurity A, EINECS 226-388-3, MFCD07783646, RARECHEM AQ NN 0041
1-Acetylimidazolidin-2-one (CAS 5391-39-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H8N2O2 and a molecular weight of 128.129 g/mol. Key properties include a melting point of 173-175°C and a density of 1.2±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 5391-39-9
- Jingsj CID
- J-33681-2
- Molecular Formula
- C5H8N2O2
- Molecular Weight
- 128.129 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 173-175°C |
|---|---|
| Density | 1.2±0.1 g/cm3 |
| Exact Mass | 128.058578 |
| PSA | 49.41000 |
| LogP | -1.95 |
| Refractive Index | 1.493 |
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1-Acetylimidazolidin-2-one?
The CAS number of 1-Acetylimidazolidin-2-one is 5391-39-9.
What are the molecular formula and molecular weight of 1-Acetylimidazolidin-2-one?
1-Acetylimidazolidin-2-one has molecular formula C5H8N2O2 and molecular weight 128.129 g/mol.
What are the upstream and downstream products of 1-Acetylimidazolidin-2-one?
For 1-Acetylimidazolidin-2-one, Upstream Products: Acetyl chloride, 2-Imidazolidone, 1-Acetyl-1H-benzotriazole; Downstream Products: Clonidine hydrochloride, 3-Acetyl-1-chlorocarbonyl-2-imidazolidone, 1-[2-[(4,6-dichloro-2-methylpyrimidin-5-yl)amino]-4,5-dihydro-1H-imidazol-1-yl]ethanone.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Acetylimidazolidin-2-one (CAS 5391-39-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-33681-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.