C4zip -

In recent patent filings and research papers, C4 Zip-tips have been critical for identifying protein isoforms and calculating theoretical masses within 0.5 Da of their primary amino acid sequences. By removing buffers and exchange salts, researchers can achieve the high-resolution mass spectra required for modern drug development and biological research. CN101883788A - 多肽，抗体可变结构域&拮抗剂

Using a high-organic solvent to release the purified protein directly onto a MALDI plate or into a fresh tube. Real-World Application: Mass Spectrometry

Allows for desalting and concentrating samples in a single, fast step. Standard Workflow for Sample Prep In recent patent filings and research papers, C4

Rinsing with a buffer like 0.1% trifluoroacetic acid (TFA).

While C18 is the "gold standard" for peptide mapping, it can bind proteins so tightly that they become nearly impossible to elute. The shorter carbon chain of the C4 resin offers: The shorter carbon chain of the C4 resin

Preparing the resin with a wetting solution (e.g., 50:50 acetonitrile in water).

Perfect for recovering larger proteins without losing them to the resin. Contaminants like salts

In the world of proteomics, the quality of your mass spectrometry data is only as good as your sample preparation. Contaminants like salts, buffers, and detergents can easily drown out the signals of the very proteins you’re trying to study. This is where become indispensable. What are C4 Zip-tips?