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Tyrosinase-IN-22 (5-Chloro-2-mercaptobenzimidazole)

Cat No.:V83898 Purity: ≥98%
Tyrosinase-IN-22 (5-Chloro-2-mercaptobenzimidazole)
Tyrosinase-IN-22 (5-Chloro-2-mercaptobenzimidazole) Chemical Structure CAS No.: 25369-78-2
Product category: Tyrosinase
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
5g
Other Sizes
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Product Description
Tyrosinase-IN-22 (compound 4) is an inhibitor of tyrosinase substrates (L-tyrosine and L-dopa) with IC50 values of 60 nM and 30 nM, respectively. Tyrosinase-IN-22 also has strong antioxidant and anti-melanogenic properties and can be used in related studies.
Tyrosinase-IN-22 (5-Chloro-2-mercaptobenzimidazole) is a potent inhibitor of tyrosinase, targeting both L-tyrosine and L-dopa substrates with IC50 values of 60 nM and 30 nM, respectively. It is a 2-mercaptobenzimidazole (2-MBI) derivative that specifically inhibits the monophenolase and diphenolase activities of the tyrosinase enzyme. The compound also demonstrates significant antioxidant and anti-melanogenic properties. It has a molecular weight of 184.64 and a molecular formula of C7H5ClN2S. It is intended for research use only.
Biological Activity I Assay Protocols (From Reference)
Targets
Tyrosinase-IN-22 targets tyrosinase, a copper-containing enzyme that catalyzes the rate-limiting steps in melanin biosynthesis. It inhibits tyrosinase's monophenolase activity on L-tyrosine with an IC50 of 60 nM and its diphenolase activity on L-dopa with an IC50 of 30 nM. By inhibiting tyrosinase, the compound reduces melanin production, making it useful for studying pigmentation disorders and skin-whitening applications. It also exhibits antioxidant properties that may contribute to its anti-melanogenic effects.
ln Vitro
In vitro studies demonstrate that Tyrosinase-IN-22 is a potent inhibitor of tyrosinase with IC50 values of 60 nM for L-tyrosine and 30 nM for L-dopa. These values indicate high potency against both the monophenolase and diphenolase activities of the enzyme. The compound also exhibits significant antioxidant activity, which may contribute to its anti-melanogenic properties. Detailed cellular assay data, including effects on melanin production in melanocytes, are not extensively documented in the available literature.
ln Vivo
In vivo activity of Tyrosinase-IN-22 is inferred from its potent tyrosinase inhibition and anti-melanogenic properties. As an inhibitor of melanin biosynthesis, it may have potential applications in treating hyperpigmentation disorders. The compound's antioxidant properties may provide additional benefits in reducing oxidative stress in skin tissues. Detailed in vivo efficacy data from animal models, including skin pigmentation studies, are not extensively documented in the available literature.
Enzyme Assay
The in vitro enzyme/receptor binding assay for Tyrosinase-IN-22 involves measuring its inhibitory activity against tyrosinase using L-tyrosine and L-dopa as substrates. The assay typically uses mushroom tyrosinase incubated with the compound at varying concentrations and the substrate. Enzyme activity is measured by spectrophotometric monitoring of dopachrome formation at 475 nm. IC50 values are determined by plotting percentage inhibition against compound concentration. Standard protocols include appropriate positive controls such as kojic acid.
Cell Assay
In vitro cell-based assays for Tyrosinase-IN-22 are conducted using melanocyte cell lines such as B16 melanoma cells. Cells are treated with the compound at various concentrations, and melanin content is measured spectrophotometrically after cell lysis. Tyrosinase activity in cell lysates is assessed using L-dopa as a substrate. Cytotoxicity is evaluated using MTT or CCK-8 assays to determine the therapeutic window. Standard protocols include appropriate positive controls such as arbutin or kojic acid.
Animal Protocol
In vivo animal studies for Tyrosinase-IN-22 would typically be conducted using mouse models of hyperpigmentation, such as UV-induced pigmentation or melanin synthesis models. Animals would be administered the compound via topical application or systemic routes, and skin pigmentation would be assessed by visual scoring, chromametry, or histology. However, detailed in vivo protocols and efficacy data are not available from the search results. The compound is intended for research use only.
ADME/Pharmacokinetics
Pharmacokinetic properties of Tyrosinase-IN-22 include a molecular weight of 184.64 and a molecular formula of C7H5ClN2S. Storage recommendations include powder at -20°C for 3 years and in solvent at -80°C for 1 year. Detailed pharmacokinetic parameters such as solubility, half-life, and bioavailability are not extensively documented in the available literature. The compound is intended for research use only.
Toxicity/Toxicokinetics
Toxicity information for Tyrosinase-IN-22 is limited. Standard safety precautions for handling research chemicals should be followed. The compound is designated for research use only and is not for human therapeutic applications. Cytotoxicity should be evaluated in cell-based assays to determine appropriate concentrations for experimental use. No detailed toxicity data are available from the search results.
References

[1].In vitro and in vivo anti-pigmentation effects of 2-mercaptobenzimidazoles as nanomolar tyrosinase inhibitors on mammalian cells and zebrafish embryos: Preparation of pigment-free zebrafish embryos. Eur J Med Chem. 2024 Feb 15;266:116136.

Additional Infomation
Tyrosinase-IN-22 (5-Chloro-2-mercaptobenzimidazole, compound 4) is a potent tyrosinase inhibitor with IC50 values of 60 nM for L-tyrosine and 30 nM for L-dopa. It exhibits significant antioxidant and anti-melanogenic properties. The compound has a molecular weight of 184.64 and formula C7H5ClN2S. It is a 2-mercaptobenzimidazole derivative that inhibits both monophenolase and diphenolase activities of tyrosinase. It is intended for research use only.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C7H5CLN2S
Molecular Weight
184.65
Exact Mass
183.986
CAS #
25369-78-2
PubChem CID
2056429
Appearance
Solid powder
Density
1.54g/cm3
Boiling Point
300.7ºC at 760mmHg
Melting Point
290-292 °C
Flash Point
135.6ºC
Vapour Pressure
0.0011mmHg at 25°C
Index of Refraction
1.75
LogP
2.505
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
1
Rotatable Bond Count
0
Heavy Atom Count
11
Complexity
185
Defined Atom Stereocenter Count
0
SMILES
ClC1C([H])=C([H])C2=C(C=1[H])N([H])C(N2[H])=S
InChi Key
ZZIHEYOZBRPWMB-UHFFFAOYSA-N
InChi Code
InChI=1S/C7H5ClN2S/c8-4-1-2-5-6(3-4)10-7(11)9-5/h1-3H,(H2,9,10,11)
Chemical Name
5-chloro-1,3-dihydrobenzimidazole-2-thione
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)
Typically soluble in DMSO (e.g. 10 mM)
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 5.4157 mL 27.0783 mL 54.1565 mL
5 mM 1.0831 mL 5.4157 mL 10.8313 mL
10 mM 0.5416 mL 2.7078 mL 5.4157 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

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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:
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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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