1. Anti-infection
  2. Bacterial
    Antibiotic
  3. SPR741 acetate

SPR741 acetate (Synonyms: NAB741 acetate)

Cat. No.: HY-P1649B Purity: 99.59%
Handling Instructions

SPR741 acetate (NAB741 acetate) is a cationic peptide derived from polymyxin B and is a potentiator molecule. SPR741 acetate increases the permeability of the outer membrane of Gram-negative bacteria and is used to treat severe Gram-negative bacteria infections. SPR741 acetate inhibits multidrug-resistant Gram-negative bacteria. The spectrum of activity of the antibiotic can be widened when used in combination with SPR741 acetate.

For research use only. We do not sell to patients.

SPR741 acetate Chemical Structure

SPR741 acetate Chemical Structure

Size Price Stock Quantity
5 mg USD 550 In-stock
Estimated Time of Arrival: December 31
10 mg USD 750 In-stock
Estimated Time of Arrival: December 31
50 mg USD 2250 In-stock
Estimated Time of Arrival: December 31
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200 mg   Get quote  

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Customer Review

Based on 1 publication(s) in Google Scholar

Other Forms of SPR741 acetate:

Top Publications Citing Use of Products

1 Publications Citing Use of MCE SPR741 acetate

  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review

Description

SPR741 acetate (NAB741 acetate) is a cationic peptide derived from polymyxin B and is a potentiator molecule. SPR741 acetate increases the permeability of the outer membrane of Gram-negative bacteria and is used to treat severe Gram-negative bacteria infections. SPR741 acetate inhibits multidrug-resistant Gram-negative bacteria. The spectrum of activity of the antibiotic can be widened when used in combination with SPR741 acetate[1][2].

In Vitro

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].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

In Vivo

SPR741 has the ability to permeabilize the outer membrane of Gram-negative bacteria, thus sensitizing them to hydrophobic antibiotics. SPR741 has a significantly safety profile of compared to that of polymyxin B, which suffers severe, dose-limiting nephrotoxicity in humans. In multiday rodent and nonhuman primate studies, polymyxin B exhibited nephrotoxicity at a far-lower exposure-normalized dose than SPR741[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Clinical Trial
Molecular Weight

1052.18

Formula

C₄₆H₇₇N₁₃O₁₅

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -80°C 2 years
-20°C 1 year
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 130 mg/mL (123.55 mM; Need ultrasonic)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 0.9504 mL 4.7520 mL 9.5041 mL
5 mM 0.1901 mL 0.9504 mL 1.9008 mL
10 mM 0.0950 mL 0.4752 mL 0.9504 mL
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: ≥ 3.25 mg/mL (3.09 mM); Clear solution

  • 2.

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in saline)

    Solubility: ≥ 3.25 mg/mL (3.09 mM); Clear solution

  • 3.

    Add each solvent one by one:  10% DMSO    90% corn oil

    Solubility: ≥ 3.25 mg/mL (3.09 mM); Clear solution

*All of the co-solvents are provided by MCE.
References

Purity: 99.59%

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Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

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The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

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× = ×
C1   V1   C2   V2

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Product Name:
SPR741 acetate
Cat. No.:
HY-P1649B
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