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2-Chlorobenzimidazole

Cat No.:V65524 Purity: ≥98%
2-Chlorobenzimidazole is a biochemical compound that may be utilized as a biomaterial or organic/chemical reagent for biomedical research.
2-Chlorobenzimidazole
2-Chlorobenzimidazole Chemical Structure CAS No.: 4857-06-1
Product category: Biochemical Assay Reagents
This product is for research use only, not for human use. We do not sell to patients.
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Product Description
2-Chlorobenzimidazole is a biochemical compound that may be utilized as a biomaterial or organic/chemical reagent for biomedical research.
2-Chlorobenzimidazole (CAS 4857-06-1) is a pharmaceutical intermediate with molecular formula C₇H₅ClN₂ and molecular weight 152.58. It appears as a solid. This biochemical reagent can be used as a biomaterial for life science related research and as a sulfonylation reagent for organic synthesis and drug discovery. The product is for research use only.
Biological Activity I Assay Protocols (From Reference)
Targets
2-Chlorobenzimidazole inhibits the growth of herpes simplex virus by acting as a competitive inhibitor for the viral enzyme thymidine kinase, which catalyzes the conversion of thymine to thymidine. It is a pharmaceutical intermediate used in the synthesis of a series of derivatives with anti-human cytomegalovirus (HCMV) activity. It can be used to form metal complexes (cobalt, copper, and zinc), with zinc complexes exhibiting significant anticancer activity.
ln Vitro
In vitro studies have shown that 2-Chlorobenzimidazole inhibits the growth of herpes simplex virus by acting as a competitive inhibitor for the viral enzyme thymidine kinase. It has been studied for its potential as an antifungal agent. Zinc complexes of 2-chlorobenzimidazole exhibit significant anticancer activity.
ln Vivo
No specific in vivo pharmacological activity data have been documented for 2-Chlorobenzimidazole as a therapeutic agent. The compound is used as a pharmaceutical intermediate and biochemical reagent. It is not administered to animals for pharmacological evaluation. Its applications are limited to in vitro biochemical research and organic synthesis.
Enzyme Assay
For non-cellular assays, 2-Chlorobenzimidazole is characterized by standard analytical techniques including NMR, HPLC, and mass spectrometry to confirm identity and purity. The compound can be evaluated as an enzyme inhibitor in thymidine kinase assays. Typical protocols involve incubating the compound with enzyme preparations and measuring residual activity. Purity: typically ≥95-98%. Storage: room temperature in a cool and dark place.
Cell Assay
For in vitro cell-based studies, 2-Chlorobenzimidazole can be used to assess antiviral and anticancer activities. Cells are cultured under standard conditions and treated with the compound or its metal complexes to evaluate effects on viral replication and cell viability. The compound is typically dissolved in DMSO and diluted in cell culture medium. Appropriate controls should be included in the experimental design.
Animal Protocol
For in vivo animal studies, 2-Chlorobenzimidazole is not typically administered as a test compound. It is used as a pharmaceutical intermediate and building block. If used in animal studies for specific research purposes, it would be administered via appropriate routes with suitable formulations. Standard animal welfare guidelines should be followed.
ADME/Pharmacokinetics
2-Chlorobenzimidazole has a molecular weight of 152.58 and molecular formula C₇H₅ClN₂. Purity: typically ≥95-98%. Storage: keep in a cool, dry place protected from light and moisture. The compound is a solid at room temperature. Solubility: soluble in common organic solvents. The compound is stable under recommended storage conditions.
Toxicity/Toxicokinetics
2-Chlorobenzimidazole is for research use only and not for human consumption. Standard laboratory safety practices should be followed when handling this chemical. Chlorinated compounds should be handled with care. Appropriate personal protective equipment including gloves and safety glasses should be worn. Specific LD₅₀ values and detailed toxicological profiles have not been extensively reported.
References

[1]. Zou R, Drach JC, Townsend LB. Design, synthesis, and antiviral evaluation of 2-chloro-5,6-dihalo-1-beta-D-ribofuranosylbenzimidazoles as potential agents for human cytomegalovirus infections. J Med Chem. 1997 Feb 28;40(5):811-8.

[2]. Cytotoxic activity, X-ray crystal structures and spectroscopic characterization of cobalt(II), copper(II) and zinc(II) coordination compounds with 2-substituted benzimidazoles. J Inorg Biochem. 2009 Sep;103(9):1204-13.

Additional Infomation
2-Chlorobenzimidazole (CAS 4857-06-1) is a pharmaceutical intermediate used in the synthesis of derivatives with anti-HCMV activity. It inhibits herpes simplex virus growth by acting as a competitive inhibitor for thymidine kinase. It can form metal complexes with zinc exhibiting significant anticancer activity. No clinical trials or therapeutic approvals exist.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C7H5CLN2
Molecular Weight
152.58
Exact Mass
152.014
CAS #
4857-06-1
PubChem CID
78572
Appearance
White to off-white solid powder
Density
1.4±0.1 g/cm3
Boiling Point
328.5±25.0 °C at 760 mmHg
Melting Point
207-211 °C(lit.)
Flash Point
182.5±8.8 °C
Vapour Pressure
0.0±0.7 mmHg at 25°C
Index of Refraction
1.703
LogP
2.58
Hydrogen Bond Donor Count
1
Hydrogen Bond Acceptor Count
1
Rotatable Bond Count
0
Heavy Atom Count
10
Complexity
129
Defined Atom Stereocenter Count
0
SMILES
ClC1=NC2=CC=CC=C2N1
InChi Key
AYPSHJCKSDNETA-UHFFFAOYSA-N
InChi Code
InChI=1S/C7H5ClN2/c8-7-9-5-3-1-2-4-6(5)10-7/h1-4H,(H,9,10)
Chemical Name
2-chloro-1H-benzimidazole
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO: ~100 mg/mL (~655.4 mM; with ultrasonication)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (16.38 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween-80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), Clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of DMSO stock solution (25.0 mg/mL) to 400 μL of PEG300 and mix well; then add 50 μL of Tween-80 and mix well; finally add 450 μL of physiological saline and adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 2.5 mg/mL (16.38 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), Clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of DMSO stock solution (25.0 mg/mL) to 900 μL of corn oil and mix well.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 6.5539 mL 32.7697 mL 65.5394 mL
5 mM 1.3108 mL 6.5539 mL 13.1079 mL
10 mM 0.6554 mL 3.2770 mL 6.5539 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

  • Calculate the Mass of a compound required to prepare a solution of known volume and concentration
  • Calculate the Volume of solution required to dissolve a compound of known mass to a desired concentration
  • Calculate the Concentration of a solution resulting from a known mass of compound in a specific volume
An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
  • Enter 350.26 in the Molecular Weight (MW) box
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
  • To calculate molar mass of a chemical compound, please enter the chemical/molecular formula and click the “Calculate’ button.
Definitions of molecular mass, molecular weight, molar mass and molar weight:
  • Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
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Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

  • Enter the mass of the reagent and the desired reconstitution concentration as well as the correct units
  • Click the “Calculate” button
  • The answer appears in the Volume (to add to vial) box
In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration: mg/mL;

Method for preparing DMSO stock solution: mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation::Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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