5-Methyl-1H-benzo[d]imidazol-2(3H)-one

5-甲基-1,3-二氢苯并咪唑-2-酮

Also known as: 5-Methylbenzimidazolone, 5-Methyl-2-benzimidazolinone, 5-Methyl-2(3H)-benzimidazolone, 5-Methylbenzoimidazol-2(3H)-one, 5-Methyl-1,3-dihydro-2H-benzimidazol-2-one, 1,3-Dihydro-5-methyl-2H-benzimidazol-2-one, 5-Methyl-1,3-dihydrobenzimidazol-2-one

5-Methyl-1H-benzo[d]imidazol-2(3H)-one (CAS 5400-75-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H8N2O and a molecular weight of 148.16200 g/mol. It is also known as 5-Methylbenzimidazolone, 5-Methyl-2-benzimidazolinone and 5-Methyl-2(3H)-benzimidazolone. Key properties include a boiling point of 147.7ºC at 760 mmHg, a density of 1.201g/cm3 and a flash point of 51.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
5400-75-9
Jingsj CID
J-1515226-2
Molecular Formula
C8H8N2O
Chinese Name
5-甲基-1,3-二氢苯并咪唑-2-酮
Molecular Weight
148.16200 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point147.7ºC at 760 mmHg
Density1.201g/cm3
Flash Point51.2ºC

Frequently Asked Questions

What is the CAS number of 5-Methyl-1H-benzo[d]imidazol-2(3H)-one?

The CAS number of 5-Methyl-1H-benzo[d]imidazol-2(3H)-one is 5400-75-9.

What are the molecular formula and molecular weight of 5-Methyl-1H-benzo[d]imidazol-2(3H)-one?

5-Methyl-1H-benzo[d]imidazol-2(3H)-one has molecular formula C8H8N2O and molecular weight 148.16200 g/mol.

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

Last updated:

How to cite: Jingsj. "5-Methyl-1H-benzo[d]imidazol-2(3H)-one (CAS 5400-75-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1515226-2 (accessed 2026-10-22).

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