BDP FL-PEG5-acid | CAS 2093197-98-7

BDP FL-PEG5-acid is a BODIPY-based fluorescent dye bearing a PEG5 carboxylic acid handle, designed for water-compatible fluorescent labeling and subsequent conjugation to biomolecules, polymers, and surfaces. Its strong visible fluorescence makes it useful for tracking conjugate formation, imaging labeled constructs, and building stable fluorescence tags for chemical biology and biomaterials workflows.

1. Bioconjugation Labeling

BDP FL-PEG5-acid is used as a fluorescent reporter for labeling proteins, peptides, and other amine-containing biomolecules through standard carboxyl-activated coupling strategies, enabling researchers to generate fluorescent conjugates for binding studies and reagent characterization. The PEG5 spacer helps reduce steric crowding around the dye, which is particularly helpful when attaching fluorophores to antibodies, affinity ligands, or enzyme scaffolds used in fluorescence-based assays and molecular imaging experiments. In chemical biology workflows, the dye is commonly incorporated to quantify conjugation yield, monitor labeling stability, and visualize biomolecule distribution in complex mixtures.

2. Polymer And Surface Functionalization

BDP FL-PEG5-acid supports fluorescent tagging of PEGylated materials and biomaterial surfaces where a carboxylic acid functionality is required for immobilization or further derivatization. Researchers use it to fabricate fluorescently traceable coatings, label hydrogel networks, and incorporate BODIPY fluorescence into polymer conjugates used for material characterization, diffusion studies, and microscopy-based localization of functionalized constructs. The PEG spacer improves compatibility with aqueous environments and can help maintain dye accessibility after attachment, which is valuable for long-term imaging of labeled materials under routine laboratory conditions.

3. Fluorescence Imaging Tracers

BDP FL-PEG5-acid is applied as a bright fluorescence tracer for cellular and molecular imaging experiments where stable, visible fluorescence is needed to track labeled components. In microscopy workflows, the dye-labeled conjugates are used to visualize the spatial distribution of tagged biomolecules or material-associated probes in fixed sample preparations and imaging assays. The carboxylic acid group also enables straightforward downstream coupling to targeting motifs or capture reagents, allowing researchers to build imaging reagents for localization studies and fluorescence readouts in multi-component experimental setups.

4. Fluorescent Assay Reagent Development

BDP FL-PEG5-acid is frequently incorporated into fluorescence assay development to create labeled standards, calibration reagents, or fluorescent readout components for monitoring binding and conjugation events. The dye's BODIPY core provides robust fluorescence suitable for constructing fluorescent probes and assay reagents that rely on direct emission measurement, including labeling controls for assay optimization and reagent screening. By using the PEG5 carboxylic acid handle as a functional attachment point, researchers can tailor conjugate format to their assay design, including immobilized assay formats and solution-phase labeling controls.