BDY TMR-X, SE | CAS 217190-15-3

BDY TMR-X, SE is a reactive tetramethylrhodamine (TMR)-based fluorescent labeling reagent designed for attaching bright red fluorophores to biomolecules and surfaces. The SE functionality supports electrophile-driven conjugation to primary amines, enabling robust fluorescent tagging for imaging and quantitative fluorescence workflows. Its TMR spectral profile is commonly leveraged in multicolor microscopy and fluorescence readouts where red emission is advantageous.

1. Protein And Peptide Labeling

BDY TMR-X, SE is used by protein chemistry and chemical biology labs to generate fluorescently labeled antibodies, enzymes, peptides, and affinity reagents for microscopy and fluorescence-based assays. Researchers typically incorporate the dye into bioconjugates to track binding, localization, and interaction dynamics, including workflows where labeled proteins are analyzed by fluorescence imaging, plate reader assays, or gel-based fluorescence readouts. The amine-reactive SE group enables direct labeling of lysine-rich proteins, facilitating straightforward preparation of fluorescent conjugates for downstream characterization and assay development.

2. Antibody Conjugate Construction

BDY TMR-X, SE supports the preparation of TMR-labeled immunoreagents used in fluorescence microscopy, flow cytometry method development, and immunostaining optimization. In these workflows, the dye-to-antibody conjugate provides a red-emitting reporter for visualizing target binding on cells, tissue sections, or immobilized antigen formats. Bioconjugation teams often select this reagent when they want a stable, bright rhodamine-family fluorophore for labeling antibodies while maintaining compatibility with standard fluorescence detection instrumentation used in research laboratories.

3. Surface and Biomaterial Functionalization

BDY TMR-X, SE is applied to fluorescently tag biomaterial surfaces and functional coatings for materials research, including studies of surface adsorption, biomolecule immobilization, and coating uniformity. By reacting the SE group with amine-containing linkers or surface chemistries, researchers can incorporate TMR fluorescence into hydrogels, polymer films, and other engineered substrates to visualize where biomolecules attach and how they distribute spatially. This approach is commonly used in assay development and experimental optimization where fluorescent readouts provide rapid feedback on surface chemistry and immobilization performance.

4. Fluorescent Labeling Standards

BDY TMR-X, SE is also used to prepare reference fluorescent standards and labeled controls for fluorescence experiments, such as validating imaging settings, calibrating relative signal intensity, and benchmarking labeling efficiency across reagent batches. In assay development pipelines, researchers generate TMR-containing control conjugates to support consistent quantification across microscopy sessions, plate-based fluorescence assays, and method comparisons. The reagent format enables reproducible preparation of labeled reference materials that are useful for troubleshooting, normalization, and quality control in fluorescence-based workflows.