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  • H-Met-Arg-Phe-Ala-OH peptide

H-Met-Arg-Phe-Ala-OH peptide

Not For Human Use, Lab Use Only.

Cat.#: 308111

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* Buy 1 get 1 free (?) What is TFA?

Special Price 75.90 USD

Availability: 5 working days
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Product Information

  • Product Name
    H-Met-Arg-Phe-Ala-OH peptide
  • Documents

    Batch to batch variation of the purity

  • Sequence Shortening
    MRFA
  • Sequence
    H-Met-Arg-Phe-Ala-OH
  • Length (aa)
    4
  • Peptide Purity (HPLC)
    99.65%
  • Molecular Formula
    C23H37N7O5S
  • Molecular Weight
    523.64
  • Source
    Synthetic
  • Form
    Powder
  • Description
    MRFA is used as a calibration standard in mass spectrometry (ESI).The tetrapeptide has been shown to be a competitive inhibitor of an enkephalin-generating endopeptidase isolated from rat brain. MRFA is a substrate for dipeptidyl peptidase III from human erythrocytes and for snapalysin.
  • Storage Guidelines
    Normally, this peptide will be delivered in lyophilized form and should be stored in a freezer at or below -20 °C. For more details, please refer to the manual: Handling and Storage of Synthetic Peptides
  • References
    • M.Knight et al., Peptides, 3, 461 (1982)
    • A.Tsugita et al., FEBS Lett., 137, 19 (1982)
    • M.Abramic et al., Biol. Chem. Hoppe-Seyler, 369, 29 (1988)
    • W.Kulik and W.Heerma, Biol. Mass Spectrom., 20, 553 (1991)
    • L.Vitale et al., Arch. Microbiol., 185, 183 (2006)
  • About TFA salt

    Trifluoroacetic acid (TFA) is a common counterion from the purification process using High-Performance Liquid Chromatography (HPLC). The presence of TFA can affect the peptide's net weight, appearance, and solubility.

    Impact on Net Weight: The TFA salt contributes to the total mass of the product. In most cases, the peptide content constitutes >80% of the total weight, with TFA accounting for the remainder.

    Solubility: TFA salts generally enhance the solubility of peptides in aqueous solutions.

    In Biological Assays: For most standard in vitro assays, the residual TFA levels do not cause interference. However, for highly sensitive cellular or biochemical studies, please be aware of its presence.

  • Molar Concentration Calculator

  • Dilution Calculator

  • Percent Concentration Calculator

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

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Volume
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Molecular Weight

Peptide Property

  • Analysed Sequence:H-MRFA-OH
  • Chemical Formula:C23H37N7O5S
  • Sequence length:4
  • Extinction coefficient:0 M-1cm-1
  • GRAVY:0.5
  • Mw average:523.65
  • Theoretical pI:11.05
  • Data Source:Peptide Property Calculator

GRAVY = grand average of hydropathy

X: Hydrophobic uncharged residues, like F I L M V W A and P

X: Basic residues, like R K H

X: Acidic residues, like D E

X: Polar uncharged residues, like G S T C N Q and Y

• Peptide Services: NovoPro's peptide synthesis services include standard chemical peptide synthesis, peptide modification, peptide libraries, and recombinant peptide expression.

• Standard Peptide Synthesis: NovoPro offers quality peptides at the most competitive prices in the industry, starting at $3.20 per amino acid. NovoPro provides PepBox – Automatic Quote Tool for online price calculation.

• Peptide Modifications: NovoPro offers a wide range of peptide modification services including isotope labeling (2H, 15N, and 13C), multiple disulfide bonds, multiple phosphorylations, KLH, BSA, ovalbumin, amidation, acetylation, biotin, FITC, etc.

Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"