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

Also known as: 5-chloro-1,3-dihydro-2H-benzimidazol-2-one, 5-chloro-1,3-dihydrobenzimidazol-2-one, 5-chloro-1H-benzo[d]imidazol-2-ol, 5-chloro-1H-benzoimidazol-2-ol, 5-chloro-2-hydroxybenzimidazole, 5-chlorobenzimidazolone, 5-chlorobenzimidazol-2-one, NSC10379

5-Chloro-1H-benzo[d]imidazol-2(3H)-one (CAS 2034-23-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H5ClN2O and a molecular weight of 168.580 g/mol. Key properties include a boiling point of 160.1±19.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 50.6±21.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
2034-23-3
Jingsj CID
J-1070243-9
Molecular Formula
C7H5ClN2O
Molecular Weight
168.580 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point160.1±19.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point50.6±21.5 °C
Exact Mass168.009033
PSA48.91000
LogP2.15
Vapor Pressure2.4±0.3 mmHg at 25°C
Refractive Index1.604
Storage Conditions2-8°C

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

The CAS number of 5-Chloro-1H-benzo[d]imidazol-2(3H)-one is 2034-23-3.

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

5-Chloro-1H-benzo[d]imidazol-2(3H)-one has molecular formula C7H5ClN2O and molecular weight 168.580 g/mol.

What are the upstream and downstream products of 5-Chloro-1H-benzo[d]imidazol-2(3H)-one?

For 5-Chloro-1H-benzo[d]imidazol-2(3H)-one, Upstream Products: 4-Chloro-o-phenylenediamine, 1,1'-Carbonyldiimidazole, Carbon dioxide; Downstream Products: 2,5-Dichloro-1H-benzimidazole, Triethylamine hydrochloride.

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

Last updated:

How to cite: Jingsj. "5-Chloro-1H-benzo[d]imidazol-2(3H)-one (CAS 2034-23-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1070243-9 (accessed 2026-11-09).

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