Fluorescent label

Fluorescent dyes are important tools for biomolecule labeling. Fluorescein derivatives can be widely labeled on reagents used in fluorescence microscopy, flow cytometry, and immunofluorescence detection. Typically, biotin, FITC Such dyes can be arbitrarily labeled on peptides N terminal or C end. But we recommend N End marking has a higher success rate, shorter time, and easier operation. Since peptides are derived from C end to N end synthesis, so N End modification will be the final step in the solid-phase synthesis, eliminating the need for additional coupling steps. On the contrary, if it is C End tagging requires additional steps and the process is more complex.