NEUROSYIL C4 HPLC Columns: 100 Å* feature a butyl (C4) bonded phase with 10% carbon load, designed for moderate hydrophobic interaction. The 100 Å pore size is ideal for small to medium-sized peptides, proteins, and moderately non-polar compounds. These columns offer faster elution compared to C8 and C18 phases, while maintaining sharp peak shapes and high resolution. They are well-suited for reversed-phase HPLC applications in pharmaceutical, proteomic, and bioanalytical workflows requiring gentle retention and reproducible results.