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5mg |
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10mg |
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25mg |
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50mg |
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100mg |
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250mg |
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500mg |
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Purity: ≥98%
Brequinar sodium (also known as DUP785; NSC-368390), a synthetic quinolinecarboxylic acid analog, is a novel and potent inhibitor of dihydroorotate dehydrogenase with potent activities against a broad spectrum of viruses and antineoplastic properties. Brequinar inhibits the enzyme dihydroorotate dehydrogenase, thereby blocking de novo pyrimidine biosynthesis. This agent may also enhance the in vivo antitumor effect of antineoplastic agents such as 5-FU.
Targets |
DHODH (dihydroorotate dehydrogenase)
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ln Vitro |
Brequinar is a dihydroorotate dehydrogenase/DHODH inhibitor with antineoplastic properties. Brequinar inhibits the enzyme dihydroorotate dehydrogenase, thereby blocking de novo pyrimidine biosynthesis.
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ln Vivo |
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Enzyme Assay |
BQR is a potent inhibitor of cellular dihydroorotate dehydrogenase, an enzyme of the de novo pyrimidine biosynthetic pathway. Infection in the presence of 0.5μM BQR reduced virus progeny production by >90%, revealing an EC(50) (drug concentration required to inhibit 50% of virus replication) of 0.017μM. Replication of other orthopoxviruses was also inhibited by BQR at similar levels. In the presence of the drug, virus early proteins accumulated to control levels, whereas late gene expression was severely impaired. This result was confirmed by indirect immunofluorescence assays and analysis of time-regulated expression of a reporter gene under the control of a virus promoter. Both assays revealed nearly 90% inhibition of late gene expression. BQR also blocked virus DNA replication, which accounted for the subsequent inhibition of virus late gene expression. The ablation of virus DNA replication, late gene expression and infectious progeny production was restored to control levels when infected cells were co-treated with uridine (URD) and BQR. These data demonstrated that BQR targeted virus DNA synthesis by depleting the cellular pyrimidine pool, which was bypassed by the salvage pathway when URD was added to the cell cultures [1].
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Cell Assay |
Intracellular pyrimidine nucleotides (PyN) can be synthesized de novo from glutamine, CO2, and ATP, or they can be salvaged from preformed pyrimidine nucleosides. The antiproliferative and immunosuppressive activities of brequinar sodium (BQR) are thought to be due to the inhibition of the activity of dihydroorotate dehydrogenase, which results in a suppression of de novo pyrimidine synthesis. Here we describe the effects of the pyrimidine nucleoSide, uridine, on the antiproliferative and immunosuppressive activities of BQR. In vitro reduction of PyN levels in Con A-stimulated T cells and inhibition of cell proliferation by low concentrations of BQR (< or =65 microM) are reversed by uridine. However, uridine is unable to reverse the effects of high concentrations of BQR (> or =65 microM)[2].
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Animal Protocol |
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References | |||
Additional Infomation |
Brequinar sodium is an organic sodium salt of brequinar. It has a role as an anticoronaviral agent, an antineoplastic agent, an antiviral agent, an EC 1.3.5.2 [dihydroorotate dehydrogenase (quinone)] inhibitor, an immunosuppressive agent, a pyrimidine synthesis inhibitor and an antimetabolite. It contains a brequinar(1-).
Brequinar Sodium is the sodium salt form of Brequinar. Brequinar inhibits the enzyme dihydroorotate dehydrogenase, thereby blocking de novo pyrimidine biosynthesis. This agent may also enhance the in vivo antitumor effect of antineoplastic agents such as 5-FU. (NCI04) |
Molecular Formula |
C23H14F2NNAO2
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Molecular Weight |
397.36
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Exact Mass |
397.0890
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Elemental Analysis |
C, 69.52; H, 3.55; F, 9.56; N, 3.53; Na, 5.79; O, 8.05
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CAS # |
96201-88-6
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Related CAS # |
Brequinar;96187-53-0
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PubChem CID |
23663964
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Appearance |
Typically exists as solids (or liquids in special cases) at room temperature
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Boiling Point |
550.9ºC at 760mmHg
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Melting Point |
>360ºC
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Flash Point |
287ºC
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LogP |
5.85
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tPSA |
50.19
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SMILES |
O=C(C1=C(C)C(C2=CC=C(C3=CC=CC=C3F)C=C2)=NC4=CC=C(F)C=C14)[O-].[Na+]
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InChi Key |
PZOHOALJQOFNTB-UHFFFAOYSA-M
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InChi Code |
InChI=1S/C23H15F2NO2.Na/c1-13-21(23(27)28)18-12-16(24)10-11-20(18)26-22(13)15-8-6-14(7-9-15)17-4-2-3-5-19(17)25/h2-12H,1H3,(H,27,28)/q+1/p-1
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Chemical Name |
Sodium 6-Fluoro-2-(2'-fluoro[1,1'-biphenyl]-4-yl)-3-methyl-4-quinolinecarboxylate
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Synonyms |
Dup785 NSC-368390 Dup 785 NSC368390 Dup-785 Brequinar SodiumBipenquinate
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HS Tariff Code |
2934.99.9001
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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)
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Solubility (In Vitro) |
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
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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
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline)(e.g. IP/IV/IM/SC) *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 : PEG300 :Tween 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). View More
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)] 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). View More
Oral Formulation 3: Dissolved in PEG400  (Please use freshly prepared in vivo formulations for optimal results.) |
Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
1 mM | 2.5166 mL | 12.5830 mL | 25.1661 mL | |
5 mM | 0.5033 mL | 2.5166 mL | 5.0332 mL | |
10 mM | 0.2517 mL | 1.2583 mL | 2.5166 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.
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.