FG-CDFFDA, SE

FG-CDFFDA, SE is a fluorescent, succinimidyl ester-bearing labeling reagent designed for covalent attachment to primary amines on biomolecules and biomaterials. As a fluorogenic probe format, it is commonly used in cell- and protein-labeling workflows where amine-reactive conjugation is paired with fluorescence readout for microscopy, imaging, and assay development. The SE (N-hydroxysuccinimide ester) functionality supports efficient coupling under standard bioconjugation conditions, enabling researchers to generate fluorescent conjugates for downstream experimental use.

1. Protein And Peptide Labeling

FG-CDFFDA, SE is used by bioconjugation groups to fluorescently tag proteins, peptides, and antibody fragments through covalent reaction with lysine side-chain amines and N-termini. In labeling workflows for fluorescence imaging and fluorescence-based bioassays, the succinimidyl ester handle enables straightforward preparation of fluorescent conjugates that can be tracked during binding, uptake, or distribution studies. This reagent format is also frequently selected for making labeled standards and tracer reagents for method development in fluorescence microscopy and plate-based readouts.

2. Cell Surface Conjugation

FG-CDFFDA, SE supports fluorescent labeling of cell-associated targets by coupling to exposed primary amines on cell-surface proteins and other amine-rich components. Researchers use the resulting fluorescent cell-associated conjugates to visualize relative localization patterns by fluorescence microscopy and to generate labeled cell populations for fluorescence-based analytical workflows. The amine-reactive SE group makes it practical for preparing cell-surface-labeled materials without requiring genetic modification or bioorthogonal handles, supporting routine staining and imaging reagent development.

3. Biomaterial Surface Functionalization

FG-CDFFDA, SE is applied in biomaterials science to introduce fluorescent reporting functionality onto amine-containing surfaces and matrices, including polymer coatings, hydrogel networks, and functionalized scaffolds. By covalently attaching the fluorophore to available surface amines, teams can create traceable materials for microscopy-based characterization of coating uniformity, surface coverage, and material remodeling. Fluorescently functionalized biomaterials prepared with this reagent are also used as tools in materials interaction studies where fluorescent visualization of the interface is required.

4. Fluorescent Conjugate Tracer Studies

FG-CDFFDA, SE is used to generate fluorescent tracer conjugates for monitoring transport, distribution, and mixing behavior in chemical biology and assay development experiments. In these workflows, the SE ester provides a convenient route to attach the fluorophore to amine-bearing biomolecules, enabling reproducible labeling for imaging and quantification. Fluorescent conjugates prepared from FG-CDFFDA, SE are commonly incorporated into experimental designs where consistent fluorescence labeling of the tracer is needed to follow process dynamics in microscopy and plate-based fluorescence measurements.