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2-Oxo-2,3-dihydro-1H-benzimidazole-5-carbonitrile

Also known as: 1H-Benzimidazole-5-carbonitrile, 2,3-dihydro-2-oxo-, 2-Oxo-2,3-dihydro-1H-benzo[d]imidazole-5-carbonitrile, 5-Cyano-2-benzimidazolinone, 2,3-Dihydro-2-oxo-1H-benzimidazole-5-carbonitrile, 2-oxo-1,3-dihydrobenzimidazole-5-carbonitrile, 2-oxo-2,3-dihydro-1H-1,3-benzodiazole-5-carbonitrile, 6-Cyanobenzimidazolinone

2-Oxo-2,3-dihydro-1H-benzimidazole-5-carbonitrile (CAS 221289-88-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H5N3O and a molecular weight of 159.14500 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
221289-88-9
Jingsj CID
J-1007445-0
Molecular Formula
C8H5N3O
Molecular Weight
159.14500 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026
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Physicochemical Properties

Exact Mass159.04300
PSA72.44000
LogP0.72788

Customs & Trade Information

HS Code2933990090
Summary2933990090. 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 2-Oxo-2,3-dihydro-1H-benzimidazole-5-carbonitrile?

The CAS number of 2-Oxo-2,3-dihydro-1H-benzimidazole-5-carbonitrile is 221289-88-9.

What are the molecular formula and molecular weight of 2-Oxo-2,3-dihydro-1H-benzimidazole-5-carbonitrile?

2-Oxo-2,3-dihydro-1H-benzimidazole-5-carbonitrile has molecular formula C8H5N3O and molecular weight 159.14500 g/mol.

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-Oxo-2,3-dihydro-1H-benzimidazole-5-carbonitrile (CAS 221289-88-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1007445-0 (accessed 2026-11-09).

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