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DB772

DB772 is an inhibitor (blocker/antagonist) of bovine viral diarrhea virus (BVDV).
DB772
DB772 Chemical Structure CAS No.: 1451058-50-6
Product category: New1
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
5mg
10mg
Other Sizes
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Product Description
DB772 is an inhibitor (blocker/antagonist) of bovine viral diarrhea virus (BVDV). DB772 also has antiprion activity.
Biological Activity I Assay Protocols (From Reference)
ln Vitro
The BVDV2 and BDV viruses are inhibited from reproducing at concentrations more than 0.2 μM, the Bungowannah virus at concentrations greater than 0.01 μM, and the HoBi virus at concentrations greater than 1.65 μM when exposed to DB772 Hydrate (0-100 μM, 96 hours). [2]. With a CC50 (50% cytotoxic concentration) of 3.8 μM and a TC-EC50 (50% tissue culture effective concentration) of 0.8 μM, DB772 hydrate exhibits anti-prion action and suppresses PrPSc in sheep microglia. accumulating[3].
Cell Assay
Cell viability assay [3]
Cell Types: Human telomerase immortalized (hTERT) PrPSc of sheep microglia Positive and negative cell lines
Tested Concentrations: 1 μM
Incubation Duration: 4 days
Experimental Results: No significant effect on cell viability, cells Vitality is 96.4%. At a concentration of 4 μM, PrPSc-positive puncta were Dramatically diminished by 65.8% and completely inhibited the accumulation of PrPSc in scrapie-infected primary sheep microglia.
References

[1]. Discovery of a novel, monocationic, small-molecule inhibitor of scrapie prion accumulation in cultured sheep microglia and Rov cells. PLoS One. 2012;7(11):e51173.

[2]. Efficacy of an antiviral compound to inhibit replication of multiple pestivirus species. Antiviral Res. 2012 Nov;96(2):127-9.

[3]. Antiprion Activity of DB772 and Related Monothiophene- and Furan-Based Analogs in a Persistently Infected Ovine Microglia Culture System. Antimicrob Agents Chemother. 2016 Aug 22;60(9):5467-82.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C20H16N4O
Exact Mass
328.132
CAS #
1451058-50-6
Related CAS #
DB772 hydrate
PubChem CID
3007934
Appearance
Light yellow to yellow solid powder
LogP
2.9
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
3
Rotatable Bond Count
3
Heavy Atom Count
25
Complexity
502
Defined Atom Stereocenter Count
0
SMILES
O1C(=CC=C1C1C=CC(=CC=1)C1=NCCN1)C1=NC2C=CC=CC=2N1
InChi Key
XDFQDDCYYZDDDY-UHFFFAOYSA-N
InChi Code
InChI=1S/C20H16N4O/c1-2-4-16-15(3-1)23-20(24-16)18-10-9-17(25-18)13-5-7-14(8-6-13)19-21-11-12-22-19/h1-10H,11-12H2,(H,21,22)(H,23,24)
Chemical Name
2-[5-[4-(4,5-dihydro-1H-imidazol-2-yl)phenyl]furan-2-yl]-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 : ~10 mg/mL (~24.92 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.)
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?
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  • 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:
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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
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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.

Biological Data
  • DB772 inhibits BVDV in primary sheep microglia (A) and Rov9 cells (B). Cells were inoculated with BVDV-containing PrPSc inoculum [55]. Following establishment of PrPSc accumulation, treatment groups were maintained in culture with 4 μM of DB772 for four passages. At the fourth passage (P-4, end of DB772 Tx), an aliquot of cells was lysed for BVDV antigen ELISA. All cultures were then continued for another four passages without DB772. Cells were collected for BVDV antigen ELISA at the end of those four clearance passages (P-8, end of clearance). A standard curve was used to transform the corrected optical densities into relative concentration of BVDV antigen. Data columns represent the means ± one standard deviation. Results at each passage were statistically compared between DB772-treated and untreated groups. The y-axis reference line indicates the minimum detection limit of the ELISA. *, P<0.001. †, below assay detection limit. §, one positive sample. PLoS One . 2012;7(11):e51173.
  • DB772 inhibits PrPSc accumulation in primary sheep microglial cells and Rov9 cells. Determination of PrPSc levels in sheep microglial cells (A) and Rov9 cells (B). Cells were inoculated with PrPSc, and following establishment of PrPSc accumulation, treatment groups were maintained in culture with 4 μM of DB772 for four passages. At the fourth passage (P-4, end of DB772 Tx), an aliquot of cells was lysed for PrPSc ELISA. All cultures were then continued for another four passages without DB772. Cells were collected for PrPSc ELISA at the end of those four passages (P-8, end of clearance). A standard curve was used to transform the corrected optical densities into relative concentration of PrPSc. Data columns represent the means ± one standard deviation. Results at each passage were statistically compared between DB772-treated and untreated groups. The y-axis reference line indicates the minimum detection limit of the ELISA. *, P<0.05. Positive and negative ELISA results were compared to proteinase K digestion-based immunoblotting (C). Passage 5 Rov9Sc/UnTx and Rov9Sc/DB772 samples were lysed, treated with 50 μg/ml of proteinase K, precipitated with phosphotungstic acid, and immunoblotted using the monoclonal anti-PrP antibody F99/97.6.1. Proteinase K-resistant prion protein bands were detected in P-5 Rov9Sc/UnTx samples, whereas bands were not detected in the P-5 Rov9Sc/DB772 lysates, consistent with the ELISA results. Successful precipitation of protein via the phosphotungstic acid method was confirmed in Rov9Sc/DB772 and Rov9Sc/UnTx samples, with most protein being proteinase K susceptible (D). The positions of molecular mass standards (in kilodaltons) are indicated to the left of the immunoblot (C) and gel (D). PLoS One . 2012;7(11):e51173.
  • DB772 does not inhibit normal prion protein expression. Determination of DB772′s effect on PRNP transcript levels in primary sheep microglia (A) and Rov9 cells (C). RNA was collected at P-4 and P-8, and assayed via quantitative RT-PCR, using normalization to GAPDH. Columns represent the log2 change in DB772-treated groups compared to untreated groups from the same scrapie-treatment categories and time points (positive values indicate DB772 enhances and negative values indicate DB772 inhibits PRNP transcript levels). Determination of DB772′s effect on total PrP concentration in primary sheep microglia (B) and Rov9 cells (D). Total protein was collected at P-4 and P-8, and assayed for total PrPC using a commercial ELISA. A standard curve was used to transform the corrected optical densities into relative concentration of PrPC. Columns represent the log2 change in DB772-treated groups compared to untreated groups from the same scrapie-treatment categories and time points. Results at each passage and for each scrapie status were statistically compared individually, using individual one-sample t tests, to the null hypothesis of no effect of DB772. *, P<0.0125. PLoS One . 2012;7(11):e51173.
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