| Size | Price | Stock | Qty |
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| 1mg |
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| 5mg |
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| 10mg |
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| Other Sizes |
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| ln Vitro |
Cefuroxime and MAC-545496 have a strong synergistic relationship; at concentrations as low as 0.03 µg/mL (~75 nM), the beta-lactam MIC against S was lowered. USA300 aureus from 512 to 8 µg/mL. Additionally, MAC545496 worked in concert with oxacillin and cefuroxime to combat ten S. clinical isolates of aureus. Moreover, against representatives of other common MRSA strains like USA100, USA400, and USA500, MAC-545496 amplified the action of cefuroxime to differing degrees, except for CMRSA4, an isolate of USA200/EMRSA16. Additionally, MAC-545496 and the antimicrobial peptides colistin and polymyxin B work in concert [1]. The concentration-dependent inhibition of mprF expression by MAC-545496 has an IC50 value of 0.0376 µg/mL[1]. In wild type, MAC-545496 similarly suppresses citrate-induced biofilm formation in a concentration-dependent manner [1].
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| ln Vivo |
As a monotherapy, MAC-545496 proved successful in treating MRSA-infected Galleria mellonella larvae in vivo. The higher survival rate of drug-treated larvae in comparison to infected, untreated larvae is proof positive that MAC-545496 is active. This is consistent with the observation of concentration-dependent S. aureus death in the larval hemolymph and the recovery of CFU from the hemolymph 200 minutes post-infection. In order to simulate the scenario of developing a bacterial infection prior to starting antimicrobial therapy, MAC-545496 was administered to Staphylococcus aureus-infected larvae 30 minutes after infection [1].
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| References |
[1]. El-Halfawy OM, et al. Discovery of an antivirulence compound that reverses β-lactam resistance in MRSA. Nat Chem Biol. 2019 Nov 25.
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| Molecular Formula |
C18H18CLN5O3S
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|---|---|
| Molecular Weight |
419.89
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| CAS # |
838810-96-1
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| Related CAS # |
838810-96-1;MAC-545496 HCl;
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| Appearance |
Typically exists as solids (or liquids in special cases) at room temperature
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| SMILES |
O=C(NC(NC1=NC=C(Cl)C=C1)=S)C2=CC=C(N3CCCCC3)C([N+]([O-])=O)=C2
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| Synonyms |
MAC545496; MAC 545496
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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) |
DMSO : ~250 mg/mL (~595.39 mM)
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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 | 2.3816 mL | 11.9079 mL | 23.8158 mL | |
| 5 mM | 0.4763 mL | 2.3816 mL | 4.7632 mL | |
| 10 mM | 0.2382 mL | 1.1908 mL | 2.3816 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.
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