BDP R6G NHS ester | CAS 335193-70-9

BDP R6G NHS ester is a reactive rhodamine-like fluorescent dye in an N-hydroxysuccinimide (NHS) ester format, designed for covalent labeling of primary amines on proteins, peptides, and other amine-containing biomolecules. Its bright visible fluorescence makes it a common choice for fluorescence microscopy, labeling controls, and conjugate preparation where stable dye attachment is required. The NHS ester chemistry supports straightforward dye conjugation workflows that are widely used in chemical biology and imaging reagent development.

1. Protein And Antibody Labeling

BDP R6G NHS ester is frequently used to generate fluorescently labeled proteins and antibody conjugates for fluorescence-based binding and localization studies. Researchers employ the NHS ester to attach the dye to lysine residues or N-termini, producing amine-reactive labeling reagents for immunofluorescence workflows, fluorescence imaging of biomolecular interactions, and assay development where a stable covalent dye is preferred over noncovalent staining. Conjugates prepared from this reagent are also commonly used as fluorescent standards in method optimization for microscopy and plate-based fluorescence readouts.

2. Fluorescence Microscopy Staining

BDP R6G NHS ester supports cellular and biomolecular fluorescence microscopy workflows that rely on covalent dye labeling of amine-containing targets. In practical imaging pipelines, the reagent is used to prepare fluorescent conjugates for visualizing labeled proteins, tracking biomolecular localization, and generating fluorescent tagging reagents for fixed-sample staining protocols. Because NHS ester labeling yields a dye-conjugate that can be incorporated into staining mixes, it is often selected when consistent labeling across samples is important for comparative imaging experiments.

3. Flow Cytometry Conjugate Preparation

BDP R6G NHS ester is used in flow cytometry reagent development when covalent fluorescent labeling of amine-bearing biomolecules is required for robust staining. Typical workflows include preparing fluorescent conjugates for labeling protein targets on cells or for creating fluorescently tagged reagents used as controls in multicolor panels. The NHS ester format enables reproducible conjugate generation for downstream cytometric analysis, supporting experimental designs that require stable dye attachment to biomolecular components.

4. Fluorescent Labeling Standards

BDP R6G NHS ester is also applied to prepare fluorescent labeling standards and calibration materials for fluorescence instrumentation and assay development. By generating well-defined dye conjugates through amine-reactive coupling, researchers can create reference materials for verifying staining consistency, checking instrument alignment, and supporting method transfer between microscopy and plate reader platforms. This use is particularly common during assay optimization, where reproducible fluorescence behavior from covalently attached dye conjugates helps standardize experimental conditions.