• Applications

    • Biomarker quantitation
    • Functional quantitative proteomics
    • Metabolomics
    • Drug and metabolite monitoring
    • Protein production monitoring
    • Allergen quantitation




    Mass Spectrometry is emerging as the reference method for absolute protein quantitation: a sample tryptic digest is spiked with one of the chemically synthesized “tryptic” peptides containing one or more heavy isotope labeled amino acids. The observed signals between the endogenous tryptic peptide and slightly heavier synthetic tryptic peptide, are then compared.
    It is strongly recommended to quantify the net content of the chemically synthesized “tryptic” peptide with our quant-peptide service or using standard CHN analysis.

  • Features

     Custom service:

    • Tailored mass increase
    • Strict QC testing for mass and purity

     Catalog peptides:

    • Angiotensin
    • β-Amyloid
    • BSA



    Our custom services allow for peptide labeling at single or multiple positions, based on a large choice of heavy hydrogen (2H), carbon (13C), or nitrogen (15N) isotopes-labeled amino acids. We can increase your peptide mass by several Daltons according to your specifications. The most frequently requested amino acids are 13C and 15N labeled.
    We also offer catalog heavy isotope-labeled Angiotensin I and II, β-amyloid and BSA peptides.

  • Specifications

    • 2H, 13C, 15N isotope-labeled peptides
    • Purity: > 95% 
    • Net weight determination
    • Min order quantity: 1 mg gross weight
    • Labeling on one or several amino acid positions



      • 2H, 13C, 15N isotope-labeled peptides at single or multiple positions
      • Purity: > 95% 
      • Net weight determination
      • Minimum order quantity: 1 mg gross weight
      • Lyophilized peptides shipped at RT

    Do not hesitate to contact us if any other specification is requested