1-Ethyl-1,3-dihydro-2H-benzimidazol-2-one

1-乙基-1H-苯并[d]咪唑-2(3H)-酮

Also known as: 1-Ethyl-2-benzimidazolinone, 1-Ethyl-1H-benzimidazole-2(3H)-one, 1-Ethyl-1H-benzo[d]imidazol-2(3H)-one, 1-Ethyl-2,3-dihydro-1H-benzimidazole-2-one, 1-ethyl-1,3-dihydro-2H-benzimidazol-2-one, 2H-Benzimidazol-2-one, 1-ethyl-1,3-dihydro-, EBIO, 1-EBIO

1-Ethyl-1,3-dihydro-2H-benzimidazol-2-one (CAS 10045-45-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H10N2O and a molecular weight of 162.189 g/mol. It is also known as 1-Ethyl-2-benzimidazolinone, 1-Ethyl-1H-benzimidazole-2(3H)-one and 1-Ethyl-1H-benzo[d]imidazol-2(3H)-one. Key properties include a melting point of 122 ºC and a density of 1.161±0.06 g/cm3. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
10045-45-1
Jingsj CID
J-30963-1
Molecular Formula
C9H10N2O
Chinese Name
1-乙基-1H-苯并[d]咪唑-2(3H)-酮
Molecular Weight
162.189 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point122 ºC
Density1.161±0.06 g/cm3

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 1-Ethyl-1,3-dihydro-2H-benzimidazol-2-one?

The CAS number of 1-Ethyl-1,3-dihydro-2H-benzimidazol-2-one is 10045-45-1.

What are the molecular formula and molecular weight of 1-Ethyl-1,3-dihydro-2H-benzimidazol-2-one?

1-Ethyl-1,3-dihydro-2H-benzimidazol-2-one has molecular formula C9H10N2O and molecular weight 162.189 g/mol.

Is 1-Ethyl-1,3-dihydro-2H-benzimidazol-2-one hazardous?

1-Ethyl-1,3-dihydro-2H-benzimidazol-2-one has GHS signal word Warning.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "1-Ethyl-1,3-dihydro-2H-benzimidazol-2-one (CAS 10045-45-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30963-1 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.