Category
Chemical Primary Standard
CAS Number
2034-23-3
Molecular Formula
C7H5ClN2O
Molecular Weight
168.58 g/mol
Synonym

5-chloro-1,3-dihydro-2H-benzimidazol-2-one; 5-chloro-1h-benzoimidazol-2-ol; 5-Chloro-1H-benzo[d]imidazol-2(3H)-one; 

Keywords
Miscellaneous compounds
Slide_1

5-Chloro-1,3-dihydrobenzimidazol-2-one (CAS No. 2034-23-3, molecular formula C7H5ClN2O, molecular weight 168.58 g/mol) is an important intermediate in organic and medicinal chemistry. The chloro group enables efficient nucleophilic substitution and functionalization, supporting the synthesis of heterocyclic compounds and bioactive scaffolds. The benzimidazolone structure provides rigidity and hydrogen-bonding capability, useful in designing enzyme modulators, receptor ligands, and pharmacologically active molecules. Manufactured under rigorous quality control and supplied by reliable chemical suppliers, it is available in scalable quantities with CoA and technical support, suitable for research, development, and commercial-scale production.