Synonym: benzimidazole, 1h-benzo d imidazole, 1,3-benzodiazole, benzoimidazole, o-benzimidazole, 3-azaindole, benziminazole, benzoglyoxaline, azindole, 1,3-diazaindene

Description

Benzimidazole is a heterocyclic aromatic compound widely used as a key intermediate in organic synthesis, pharmaceutical research, and materials science. Due to its fused benzene–imidazole ring structure, benzimidazole exhibits versatile chemical reactivity and structural stability, making it an important building block in the development of bioactive molecules, functional materials, and coordination compounds.

This product is supplied as a high-purity crystalline powder (≥98%), manufactured under strict quality control standards and verified by HPLC and infrared spectroscopy to ensure consistency and reliability. It is suitable for research and laboratory use, including synthesis development, reference studies, and analytical validation.

Specifications

Parameter	Specification
Chemical Name	Benzimidazole
CAS Number	51-17-2
IUPAC Name	1H-benzimidazole
Molecular Formula	C7H6N2
Molecular Weight	118.14 g/mol
SMILES	N1C=NC2=CC=CC=C12
Assay (HPLC)	≥ 97.5%
Purity	98%
Melting Point	171.0 – 174.0 °C
Boiling Point	> 360.0 °C
Appearance	Beige to brown crystalline powder or crystals
Infrared Spectrum	Authentic
Solubility	Sparingly soluble in water; more soluble in hot water; sparingly soluble in ether; practically insoluble in benzene and petroleum ether; soluble in aqueous acids and strong alkalies; freely soluble in alcohol and boiling xylene
Physical Form	Crystalline powder or crystals
Packaging	Plastic bottle
Quantity	100 g
Beilstein Registry Number	23, 131
Merck Index	15, 1083

Features

High Purity (≥98%)

Verified by HPLC to ensure consistent quality for research and synthesis.
Well-Defined Chemical Identity

Confirmed by infrared spectroscopy and reference-standard comparison.
Excellent Chemical Stability

Suitable for multi-step synthesis and long-term laboratory storage.
Broad Solubility Profile

Compatible with acidic, alkaline, and organic solvent systems.
Research Grade Quality

Ideal for laboratory research, method development, and analytical studies.

Applications

Organic & Medicinal Chemistry

Intermediate for the synthesis of benzimidazole derivatives and heterocyclic compounds.
Pharmaceutical Research

Structural scaffold for bioactive molecule screening and drug discovery studies.
Materials Science

Used in the development of functional materials and coordination complexes.
Analytical & Reference Use

Suitable for method validation, reference comparisons, and spectroscopy studies.

Safety and Handling

Safety Parameter	Information
Hazard Category	Warning
Hazard Statements (GHS)	Causes skin irritation. May cause respiratory irritation. Causes serious eye irritation.
Precautionary Statements (GHS)	Avoid breathing dust/fume/gas/mist/vapors/spray. Wear protective gloves, protective clothing, eye protection, and face protection. IF ON SKIN: Wash with plenty of soap and water. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.
EINECS Number	200-081-4
RTECS Number	DD5425000
TSCA Status	Listed (TSCA)

Benzimidazole 98% Research Grade