SureQuant™ Phosphopeptide Suitability Standard (500 fmol/μL), 50 μL - FAQs

The SureQuant Phosphopeptide Suitability Standard is designed for calibration of the MS Instrument whereas the SureQuant Multipathway Phosphopeptide Standard is designed for internal quantitation and analysis of specific peptides. The 20 phosphopeptides present in the SureQuant Phosphopeptide Suitability Standard are included within the SureQuant Multipathway Phosphopeptide Standard.

Find additional tips, troubleshooting help, and resources within our Mass Spectrometry Support Center.

The SureQuant Phosphopeptide Suitability Standard is an optimized mixture of 20 isotopically labeled HeavyPeptide AQUA Basic phosphopeptides for LC optimization and monitoring of LC-MS/MS system performance. The specific phosphopeptides represent relevant proteins from key signaling pathways that include serine, threonine, and tyrosine phosphorylation.

The SureQuant Phosphopeptide Suitability Standard is provided at a final concentration of 500 fmol/µL. Differences in peak height of each peptide in the mix in LC-MS/MS analysis are due to differences in charge state, solubility, matrix effect, and hydrophilicity/hydrophobicity.

Find additional tips, troubleshooting help, and resources within our Mass Spectrometry Support Center.