5-(Acetoacetamido)-2-benzimidazolinone

Also known as: 5-Acetoacetaminobenzimidazolone, 5-Acetoacetlamino benzimdazolone, 5-acetylacetamidobenzimidazolone, N-(2,3-Dihydro-2-oxo-1H-benzimidazol-5-yl)-3-oxobutanamide, Butanamide, N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-oxo-, 5-(Acetoacetylamino)benzimidazolone, AABI

5-(Acetoacetamido)-2-benzimidazolinone (CAS 26576-46-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H11N3O3 and a molecular weight of 233.223 g/mol. Key properties include a melting point of 350°C, a boiling point of 371.0±35.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 153.5±26.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 26576-46-5
Jingsj CID: J-32847-4
Molecular Formula: C₁₁H₁₁N₃O₃
Molecular Weight: 233.223 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	350°C
Boiling Point	371.0±35.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	153.5±26.1 °C
Exact Mass	233.080048
PSA	94.82000
LogP	0.30
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.617

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 5-(Acetoacetamido)-2-benzimidazolinone?

The CAS number of 5-(Acetoacetamido)-2-benzimidazolinone is 26576-46-5.

What are the molecular formula and molecular weight of 5-(Acetoacetamido)-2-benzimidazolinone?

5-(Acetoacetamido)-2-benzimidazolinone has molecular formula C11H11N3O3 and molecular weight 233.223 g/mol.

What are the upstream and downstream products of 5-(Acetoacetamido)-2-benzimidazolinone?

For 5-(Acetoacetamido)-2-benzimidazolinone, Upstream Products: Diketene, 5-Amino-1,3-dihydro-2H-benzimidazol-2-one; Downstream Products: Pigment Yellow 151.

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

Last updated: 8/21/2026

How to cite: Jingsj. "5-(Acetoacetamido)-2-benzimidazolinone (CAS 26576-46-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-32847-4 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.