BDP FL tetrazine | CAS 2042193-77-9

BDP FL tetrazine is a tetrazine-functional fluorescent reagent designed for bioorthogonal click chemistry workflows, enabling rapid labeling via inverse-electron-demand Diels-Alder reactions with trans-cyclooctene (TCO) or related strained-alkene partners. Its bright BODIPY-based fluorescence supports sensitive visualization of biomolecules and materials after conjugation, making it useful for constructing fluorescent probes, tracking conjugate formation, and preparing stained samples for microscopy and imaging-based assays.

1. Bioorthogonal Conjugate Labeling

BDP FL tetrazine is used by chemical biology and glycobiology groups to fluorescently label biomolecules that have been pre-functionalized with a strained-alkene handle such as TCO. Researchers incorporate it into workflows for post-labeling of antibodies, peptides, affinity reagents, and other targeting ligands where a fast, selective click step is preferred over slower or less selective labeling chemistries. The tetrazine handle allows controlled addition of the fluorescent BODIPY signal to the desired conjugate, supporting downstream imaging and fluorescence readouts in assay development and molecular imaging studies.

2. Fluorescence Microscopy Staining

BDP FL tetrazine is applied in fluorescence microscopy experiments to visualize tagged biomolecular assemblies on cells, extracellular matrices, or biomaterial surfaces after strained-alkene functionalization. Imaging teams commonly use it to generate high-contrast fluorescent labeling by adding the fluorophore in a single conjugation step, which helps streamline staining workflows and reduce background from unreacted labeling reagents. This makes it practical for live-sample handling strategies where researchers want to control when the fluorescent signal is introduced, supporting localization studies and fluorescence tracking of conjugate distribution.

3. Flow Cytometry Signal Tagging

BDP FL tetrazine is used in flow cytometry development to fluorescently tag TCO-bearing biomolecules for population-level analysis. Assay developers leverage the tetrazine click step to attach the BODIPY fluorophore to targeting constructs used in labeling panels, enabling consistent conjugation timing and reducing variability from multi-step dye coupling. The resulting fluorescent conjugates are then analyzed to quantify labeling intensity across samples, supporting optimization of labeling density and conjugate performance in fluorescence-based screening workflows.

4. Fluorescent Probe Construction

BDP FL tetrazine is incorporated into fluorescent probe development where tetrazine-strained-alkene click chemistry is used to assemble modular imaging reagents. Probe designers use it to build conjugates that combine a recognition element (introduced via the strained-alkene partner) with a BODIPY fluorophore for imaging readouts, including multicomponent labeling strategies where the fluorophore is installed last. This approach is particularly useful when teams want to iterate probe designs efficiently for microscopy and fluorescence assay formats without redesigning the entire conjugate from the ground up.