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D13-9001

Cat No.:V28650 Purity: ≥98%
D13-9001 is an inhibitor (blocker/antagonist) of AcrB (AcrAB-TolC efflux pump subunit) and MexB (MexAB-OprM efflux pump subunit).
D13-9001
D13-9001 Chemical Structure CAS No.: 957471-96-4
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
100mg
Other Sizes
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Product Description
D13-9001 is an inhibitor (blocker/antagonist) of AcrB (AcrAB-TolC efflux pump subunit) and MexB (MexAB-OprM efflux pump subunit). The corresponding Kds in Escherichia coli and Pseudomonas aeruginosa are 1.15 μM and 3.57 respectively. μM. D13-9001 has antibiotic activity.
D13-9001 (CAS 957471-96-4) is a potent inhibitor of bacterial multidrug efflux pumps, specifically targeting AcrB (AcrAB-TolC efflux pump subunit) and MexB (MexAB-OprM efflux pump subunit). It exhibits antibiotic activity by blocking the efflux of antibiotics from bacterial cells, thereby restoring their efficacy against resistant strains. D13-9001 is used in antimicrobial research to study multidrug resistance mechanisms.
Biological Activity I Assay Protocols (From Reference)
Targets
D13-9001 targets AcrB, the inner membrane component of the AcrAB-TolC efflux pump in Escherichia coli, and MexB, the corresponding component in Pseudomonas aeruginosa. These efflux pumps are major contributors to multidrug resistance in Gram-negative bacteria. By inhibiting AcrB and MexB, D13-9001 prevents the active extrusion of antibiotics from bacterial cells.
ln Vitro
D13-9001 has good safety and great solubility [3].
In vitro, D13-9001 binds to AcrB with a Kd of 1.15 μM in E. coli and to MexB with a Kd of 3.57 μM in P. aeruginosa. It exhibits antibiotic activity by blocking efflux pump function. The compound's inhibitory mechanism has been studied through molecular dynamics simulations to understand its binding interactions with these efflux pumps.
ln Vivo
Rats with lethal pneumonia at the end of day seven respond better to treatment with D13-9001 (1.25–20 mg/kg; intravenous infusion; 2 hours) than to AZT alone [3].
In vivo activity data for D13-9001 are limited in the published literature. As an efflux pump inhibitor, it has potential applications in restoring antibiotic efficacy against multidrug-resistant bacterial infections. Further in vivo studies are needed to evaluate its efficacy in animal models of infection and to characterize its pharmacokinetic and pharmacodynamic properties.
Enzyme Assay
In vitro enzyme/receptor binding assays for D13-9001 are performed using purified AcrB or MexB proteins. Binding affinity is measured using surface plasmon resonance (SPR) or isothermal titration calorimetry (ITC) to determine Kd values. Alternatively, efflux pump inhibition is assessed by measuring the accumulation of fluorescent substrates or radiolabeled antibiotics in bacterial cells in the presence of the compound.
Cell Assay
In vitro cellular assays for D13-9001 are performed using bacterial strains expressing AcrB or MexB efflux pumps. Bacteria are treated with the compound in the presence of a fluorescent efflux substrate or antibiotic, and the intracellular accumulation of the substrate is measured fluorometrically or by radiolabel counting. The reduction in efflux activity is quantified and compared to untreated controls.
Animal Protocol
Animal/Disease Models: SD rat (Pseudomonas aeruginosa PAM1020 lung infection) [3]
Doses: 1.25 mg/kg, 5 mg/kg, 20 mg/kg
Route of Administration: intravenous (iv) (iv)infusion; 2 hour
Experimental Results: 1.25, The combination of 5 and 20 mg/kg of D13-9001 with 1000 mg/kg of AZT improved survival at the end of day seven, whereas no significant effect was observed with treatment with AZT alone.
In vivo animal experimental protocols for D13-9001 are not extensively documented. As a potential antibiotic adjuvant, in vivo studies would typically involve administration to mouse models of bacterial infection. The compound would be administered alone or in combination with an antibiotic, and efficacy would be assessed by measuring bacterial load, survival rates, and infection resolution.
ADME/Pharmacokinetics
Pharmacokinetic properties of D13-9001 have not been systematically characterized. The compound has a molecular weight of 693.78 and molecular formula C₃₁H₃₉N₁₁O₆S. It should be stored as a powder at -20°C for up to 3 years. The compound is soluble in DMSO. Further PK studies are needed to determine its absorption, distribution, metabolism, and excretion profile.
Toxicity/Toxicokinetics
Toxicological data for D13-9001 are not extensively reported. As a research-use compound, its safety profile has not been formally evaluated in comprehensive preclinical toxicology studies. The compound is intended for research purposes only and is not approved for human therapeutic use. Standard laboratory safety precautions should be followed when handling this compound.
References

[1]. Recent advances toward a molecular mechanism of efflux pump inhibition. Front Microbiol. 2015 May 5; 6:421.

[2]. Insights into the Inhibitory Mechanism of D13-9001 to the Multidrug Transporter AcrB through Molecular Dynamics Simulations. J Phys Chem B. 2016 Mar 10;120(9):2145-54.

[3]. MexAB-OprM specific efflux pump inhibitors in Pseudomonas aeruginosa. Part 7: highly soluble and in vivo active quaternary ammonium analogue D13-9001, a potential preclinical candidate. Bioorg Med Chem. 2007 Nov 15;15(22):7087-97.

Additional Infomation
D13-9001 is a potent efflux pump inhibitor with CAS number 957471-96-4, molecular formula C₃₁H₃₉N₁₁O₆S, and molecular weight 693.78. It targets AcrB (Kd = 1.15 μM) and MexB (Kd = 3.57 μM). The compound exhibits antibiotic activity and is used in antimicrobial resistance research. This product is for research use only.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C31H39N11O6S
Molecular Weight
693.776463747025
Exact Mass
693.28
CAS #
957471-96-4
PubChem CID
17757337
Appearance
Typically exists as solid at room temperature
LogP
2.5
Hydrogen Bond Donor Count
3
Hydrogen Bond Acceptor Count
13
Rotatable Bond Count
12
Heavy Atom Count
49
Complexity
1460
Defined Atom Stereocenter Count
1
SMILES
CC(C)(C)C1=CSC(=N1)NC(=O)C2=CC3=NC(=C(C(=O)N3C=C2)/C=C/C4=NNN=N4)N5CCC[C@H](C5)OC(=O)NCC[N+](C)(C)CC(=O)[O-]
InChi Key
RVJNIKFVEAWLQC-HXUWFJFHSA-N
InChi Code
InChI=1S/C31H39N11O6S/c1-31(2,3)22-18-49-29(33-22)35-27(45)19-10-13-41-24(15-19)34-26(21(28(41)46)8-9-23-36-38-39-37-23)40-12-6-7-20(16-40)48-30(47)32-11-14-42(4,5)17-25(43)44/h8-10,13,15,18,20H,6-7,11-12,14,16-17H2,1-5H3,(H3-,32,33,35,36,37,38,39,43,44,45,47)/t20-/m1/s1
Chemical Name
2-[2-[[(3R)-1-[8-[(4-tert-butyl-1,3-thiazol-2-yl)carbamoyl]-4-oxo-3-[(E)-2-(2H-tetrazol-5-yl)ethenyl]pyrido[1,2-a]pyrimidin-2-yl]piperidin-3-yl]oxycarbonylamino]ethyl-dimethylazaniumyl]acetate
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)
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
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 1.4414 mL 7.2069 mL 14.4138 mL
5 mM 0.2883 mL 1.4414 mL 2.8828 mL
10 mM 0.1441 mL 0.7207 mL 1.4414 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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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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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

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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.

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