4-Azabenzimidazole Chemical Properties

Melting point:

148-151 °C (lit.)

Boiling point:

140-150°C/0.1mm

Density 

1.2058 (rough estimate)

refractive index 

1.5589 (estimate)

Flash point:

140-150°C/0.1mm

storage temp. 

Inert atmosphere,Room Temperature

solubility 

Soluble in dimethylformamide.

pka

8.46±0.20(Predicted)

BRN 

2600

CAS DataBase Reference

273-21-2(CAS DataBase Reference)

EPA Substance Registry System

1H-Imidazo[4,5-b]pyridine (273-21-2)

Safety Information

Hazard Codes 

Xn

Risk Statements 

22

Safety Statements 

24/25

WGK Germany 

3

RTECS 

NJ5108000

HS Code 

2933998090

Toxicity

mouse,LD50,intraperitoneal,> 200mg/kg (200mg/kg),Journal of Medicinal Chemistry. Vol. 6, Pg. 480, 1963.

MSDS

• Language:English Provider:1H-Imidazo[4,5-b]pyridine
• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

4-Azabenzimidazole Usage And Synthesis

Chemical Properties

yellow to light brown powder

Uses

4-Azabenzimidazole is used in the preparation of imidazo[4,5-b]pyridine 4-oxide. It is also used as a reagent to prepare benzoylmethyl-substituted azoles which are inhibitors of nitric oxide synthase with antioxidant properties.

Definition

ChEBI: The [4,5-b]-fused isomer of imidazopyridine.

4-Azabenzimidazole(273-21-2)Related Product Information

• 2-Methylbenzimidazole
• Methimazole
• Benzimidazole
• Levamisole
• Mebendazole
• 2-Chlorobenzimidazole
• Pyridine
• 6-BROMO-2-METHYL-4H-IMIDAZO[4,5-B]PYRIDINE
• 4-AZABENZIMIDAZOLE, 99
• 5-AZABENZIMIDAZOLE
• 1H-IMIDAZO[4,5-B]PYRIDINE-2-THIOL
• 4,5,6,7-Tetrabromo-2-azabenzimidazole, 4,5,6,7-Tetrabromobenzotriazole, NSC 231634, TBBt,4,5,6,7-TETRABROMO-2-AZABENZIMIDAZOLE
• benzimidazolone
• 4-Azabenzimidazole
• Alkyl benzimidazole
• IMIDAZOPYRIDINE
• 2-(4-CHLOROPHENYL)-1-([3-(TRIFLUOROMETHYL)BENZYL]OXY)-1H-IMIDAZO[4,5-B]PYRIDINE
• 1-[(4-CHLOROBENZYL)OXY]-2-PHENYL-1H-IMIDAZO[4,5-B]PYRIDINE