Rhodamine 110, bis-(CBZ-L-argenine amide), dihydrochloride salt

Rhodamine 110, bis-(CBZ-L-argenine amide), dihydrochloride salt is a rhodamine 110-based, bis-guanidinium amide derivative designed for fluorescence labeling workflows that benefit from charge-assisted uptake and strong optical contrast. Its rhodamine 110 core provides visible fluorescence for microscopy and plate-based readouts, while the arginine-rich amide architecture supports biomolecular and cellular association in imaging experiments. The dihydrochloride salt form improves handling in aqueous assay buffers used in chemical biology and imaging tool development.

1. Fluorescence Microscopy Staining

Rhodamine 110, bis-(CBZ-L-argenine amide), dihydrochloride salt is used by cell biology and microscopy groups as a fluorescent staining reagent to visualize intracellular distribution patterns in fixed or prepared samples, where the rhodamine 110 emission enables straightforward detection on standard fluorescence microscopes. Researchers often incorporate this dye into imaging experiments to track uptake-related localization and to generate high-contrast fluorescence images for qualitative assessment of labeling performance in cell-associated assays. The arginine-derived amide motif is particularly valued in workflows that rely on electrostatic interactions with negatively charged cellular components, supporting robust signal generation for imaging readouts.

2. Flow Cytometry Labeling

Rhodamine 110, bis-(CBZ-L-argenine amide), dihydrochloride salt is applied in flow cytometry workflows to quantify fluorescence intensity distributions in cell populations after dye incubation. In these experiments, the rhodamine 110 fluorophore provides a bright signal that can be measured using common flow cytometer laser/emission filter configurations, enabling population-level comparisons across experimental conditions. Chemical biology teams and assay developers use this reagent to support labeling-based studies such as uptake profiling, staining uniformity checks, and optimization of labeling parameters for downstream experimental pipelines.

3. Fluorescence-Based Bioassays

Rhodamine 110, bis-(CBZ-L-arginine amide), dihydrochloride salt is also used in fluorescence assay development where a rhodamine 110 signal is monitored in multiwell plate formats. Researchers employ the dye as a reporter for fluorescence readouts in cell-associated or biomaterial-adjacent assays, leveraging the dye's strong visible emission to monitor changes in fluorescence intensity under defined experimental conditions. This application is common in screening and method-development settings where consistent optical response is needed for comparative measurements, including optimization of incubation conditions and evaluation of assay robustness for fluorescence quantification.

4. Biomaterial and Surface Imaging

Rhodamine 110, bis-(CBZ-L-argenine amide), dihydrochloride salt supports fluorescence imaging of biomaterials and engineered surfaces in materials science and chemical biology laboratories. Investigators use the dye to visualize association of the fluorescent label with cell-contacting substrates, coatings, or surface-treated constructs, taking advantage of the charged arginine-rich motif to promote interaction with surface-associated components. In these workflows, the rhodamine 110 fluorescence enables spatial mapping of labeling on substrates using fluorescence microscopy, supporting studies that require direct visualization of how fluorescent labeling distributes across material surfaces.