BDY FL-X, SE | CAS 217190-09-5

BDY FL-X, SE is a fluorescent, succinimidyl-ester-functionalized labeling reagent designed for covalent attachment to primary amines on proteins, peptides, and other amine-containing biomolecules. Its reactive SE group enables efficient dye conjugation under standard bioconjugation workflows, making it a practical choice for fluorescence labeling in microscopy and quantitative fluorescence assays. The resulting dye conjugates are typically used as imaging and detection reagents where bright, stable fluorescence labeling is required.

1. Protein And Antibody Labeling

BDY FL-X, SE is frequently used by bioconjugation and analytical chemistry teams to generate fluorescent protein conjugates for immunoreagent development and binding studies. Researchers commonly label antibodies, antibody fragments, enzymes, and carrier proteins to visualize binding events, track conjugate distribution, and support fluorescence-based characterization of biomolecular interactions. Because the SE functionality targets accessible lysine residues and N-termini, the reagent is well matched to workflows where amine-reactive dye conjugation is preferred for downstream assays and imaging.

2. Fluorescence Microscopy Staining

BDY FL-X, SE supports fluorescence microscopy workflows by enabling covalent staining of amine-bearing targets in fixed-cell and fixed-tissue preparations, as well as labeled biomolecular components used as imaging reagents. Imaging teams use BDY FL-X, SE-labeled proteins to create fluorescent probes for localization experiments, to tag extracellular or cell-associated protein populations, and to generate consistent staining reagents for multi-channel microscopy panels. The covalent labeling approach helps reduce dye loss during washing steps that are common in microscopy sample preparation.

3. Flow Cytometry Labeling

BDY FL-X, SE is used in flow cytometry development to prepare fluorescently labeled biomolecules for cell-surface and cell-associated fluorescence readouts. Cytometry users commonly conjugate amine-reactive dyes to proteins used as probes or to affinity reagents that report on binding to cellular components, then quantify fluorescence intensity across large sample sets. The SE-based conjugation strategy is particularly practical when a stable, covalently attached fluorophore is desired for reproducible staining and robust sample-to-sample consistency in instrument workflows.

4. Fluorescent Bioassay Reagent Preparation

BDY FL-X, SE is also applied in fluorescence assay development where labeled proteins and other amine-containing reagents are needed as signal-generating components. Assay developers use the dye conjugates to construct fluorescence-based binding assays, reagent controls, and quantitative readouts in plate formats, leveraging the covalent dye attachment to maintain labeling through assay handling and washing. In chemical biology and biomaterials research, BDY FL-X, SE-derived fluorescent conjugates are commonly used to track reagent incorporation, monitor labeling of functional biomolecules, and support method development for fluorescence readouts.