X4C

X4C is a private, pre-revenue platform company leveraging a patented calix[4]arene-based technology to create advanced surface coatings for life sciences applications. Its core focus is enabling next-generation In Vitro Diagnostic (IVD) assays by providing ultra-stable surfaces with controlled biomolecule density and orientation. The company operates as a collaborative partner, offering products and services to IVD developers, and is backed by strong academic roots, two patent families, and a small, experienced management team.

Proprietary surface coating technology based on calix[4]arene molecules. These small organic molecules enhance the covalent or passive binding of biomolecules (antibodies, proteins, peptides) to surfaces of any material, shape, or dimension, enabling ultra-stable surfaces with controlled biomolecule density and orientation.

X4C competes with providers of surface chemistry and bioconjugation technologies for diagnostics, including large chemical suppliers (e.g., Merck, Thermo Fisher) and specialized biotech firms. Its differentiation lies in the unique calix[4]arene chemistry, which claims superior stability and orientation control compared to standard passive adsorption or generic covalent linkage methods.