SPR741
Based on 3 publication(s) in Google Scholar
SPR741 (NAB741) is a cationic peptide derived from polymyxin B and is a potentiator molecule. SPR741 increases the permeability of the outer membrane of Gram-negative bacteria and is used to treat severe Gram-negative bacteria infections. SPR741 inhibits multidrug-resistant Gram-negative bacteria. The spectrum of activity of the antibiotic can be widened when used in combination with SPR741.
For research use only. We do not sell to patients.
- Purity: 99.08%
- CAS No.: 1179330-52-9
- Formula: C44H73N13O13
- Molecular Weight:992.13
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Storage:
Sealed storage, away from moisture.
Powder -80°C, 2 years , -20°C, 1 year* In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
To place orders, for customer services and technical support, please contact: MedChemExpress USA
Tel: 609-228-6898 E-mail: [email protected] [email protected]
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Biological Activity
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Chemical Information
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Solvent & Solubility
- Purity & Documentation
- References
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Help & FAQs
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Anti-Infection Compound Library
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Publications Citing Use of MedChemExpress (MCE) SPR741
MoreAll Antibiotic Isoforms
More
Biological Activity
SPR741 potentiates antibiotics that are substrates of the AcrAB-TolC efflux pump in E. coli, effectively circumventing the contribution of this pump to intrinsic antibiotic resistance. The intrinsic resistance of E. coli to certain antibiotics that is mediated by both the outer membrane and the AcrAB-TolC efflux system can be overcome, or circumvented, by combining the antibiotic with SPR741 but that potentiation of intrinsic resistance due primarily to efflux may be limited[1].
SPR741 lacks significant antibacterial activity as a stand-alone agent but interacts with the outer membrane of Gram-negative bacteria to increase permeability and thereby improve the accumulation of coadministered antibiotics inside the pathogen[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
| NCT Number | Sponsor | Condition | Start Date |
Phase
|
|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
Chemical Information
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CAS No. 1179330-52-9
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Appearance Solid
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Molecular Weight 992.13
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Formula C44H73N13O13
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Color White to off-white
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Synonyms
NAB741
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Shipping
Room temperature in continental US; may vary elsewhere.
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Storage
Sealed storage, away from moisture
Powder -80°C 2 years -20°C 1 year * In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)
Publications (3)
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Journal Impact Factor
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Most Recent
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Nature
2022 Apr;604(7906):541-545. PMID: 35388215 -
Int J Antimicrob Agents
The cathelicidin-derived close-to-nature peptide D-11 sensitises Klebsiella pneumoniae to a range of antibiotics in vitro, ex vivo and in vivo. [Abstract]2021 Nov;58(5):106434. PMID: 34525402 -
J Pharm Biomed Anal
Development and validation of a liquid chromatography-tandem mass spectrometry method for the determination of polymixin B1, B2, ile-B1, E1, and E2 in human plasma and its clinical pharmacokinetic application. [Abstract]2024 Nov 15:250:116403. PMID: 39116583
Solvent & Solubility
DMSO : 100 mg/mL (100.79 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Purity & Documentation
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Data Sheet (280 KB)
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SDS (252 KB)
- English - EN (252 KB)
- Français - FR (252 KB)
- Deutsch - DE (252 KB)
- Norwegian - NO (252 KB)
- Español - ES (252 KB)
- Swedish - SV (252 KB)
- Italian - IT (252 KB)
- Korean - KR (252 KB)
- Portuguese - PT (252 KB)
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Handling Instructions (2659 KB)
References
[1]. Corbett D, et al. Potentiation of Antibiotic Activity by a Novel Cationic Peptide: Potency and Spectrum of Activity of SPR741. Antimicrob Agents Chemother. 2017 Jul 25;61(8). pii: e00200-17. [Content Brief]
[2]. Eckburg PB, et al. Safety, Tolerability, Pharmacokinetics, and Drug Interaction Potential of SPR741, an Intravenous Potentiator, after Single and Multiple Ascending Doses and When Combined with β-Lactam Antibiotics in Healthy Subjects. Antimicrob Agents Chemother. 2019 Aug 23;63(9). pii: e00892-19. [Content Brief]
Complete Stock Solution Preparation Table
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 1.0079 mL | 5.0397 mL | 10.0793 mL | 25.1983 mL |
| 5 mM | 0.2016 mL | 1.0079 mL | 2.0159 mL | 5.0397 mL | |
| 10 mM | 0.1008 mL | 0.5040 mL | 1.0079 mL | 2.5198 mL | |
| 15 mM | 0.0672 mL | 0.3360 mL | 0.6720 mL | 1.6799 mL | |
| 20 mM | 0.0504 mL | 0.2520 mL | 0.5040 mL | 1.2599 mL | |
| 25 mM | 0.0403 mL | 0.2016 mL | 0.4032 mL | 1.0079 mL | |
| 30 mM | 0.0336 mL | 0.1680 mL | 0.3360 mL | 0.8399 mL | |
| 40 mM | 0.0252 mL | 0.1260 mL | 0.2520 mL | 0.6300 mL | |
| 50 mM | 0.0202 mL | 0.1008 mL | 0.2016 mL | 0.5040 mL | |
| 60 mM | 0.0168 mL | 0.0840 mL | 0.1680 mL | 0.4200 mL | |
| 80 mM | 0.0126 mL | 0.0630 mL | 0.1260 mL | 0.3150 mL | |
| 100 mM | 0.0101 mL | 0.0504 mL | 0.1008 mL | 0.2520 mL |
SPR741 Related Classifications
HY-P1649 Related Classifications
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