Cyanine3.5 dimethyl | CAS 42849-61-6

Cyanine3.5 dimethyl is a cyanine-family fluorescent dye designed for fluorescence labeling workflows that benefit from the dye's red-shifted emission and strong optical readout. As a dimethylated cyanine derivative, it is commonly used as a fluorophore building block for preparing fluorescent conjugates for imaging and assay development, where attachment to biomolecules or materials enables visualization and quantitative fluorescence measurements.

1. Fluorescence Labeling Conjugates

Cyanine3.5 dimethyl is frequently used by chemical biology and imaging labs to construct fluorescent labeling conjugates for proteins, peptides, and other research-grade biomolecules. In these workflows, the dye serves as a convenient fluorophore component for generating imaging reagents that can be tracked by fluorescence microscopy or fluorescence-based plate assays after conjugation to the desired targeting scaffold. Researchers use cyanine conjugates to follow binding, localization, and transport in labeled biomolecular assemblies, including affinity reagents and molecular probes used in microscopy and quantitative fluorescence studies.

2. Fluorescence Microscopy Imaging

Cyanine3.5 dimethyl is applied in fluorescence microscopy experiments where a cyanine fluorophore with emission in the red region helps separate signals from common green-channel labels. Imaging groups use Cyanine3.5 dimethyl-derived conjugates to visualize labeled biomolecules in fixed-cell or fixed-tissue studies and to support multi-color imaging panels when spectral separation is required. The dye's brightness and cyanine optical characteristics make it a practical choice for preparing microscopy stains and fluorescent tracers used to map distribution patterns in cellular and biomaterials contexts.

3. Flow Cytometry Fluorescent Tagging

Cyanine3.5 dimethyl is also used to prepare fluorescent tags for flow cytometry workflows that require a red-emitting reporter. Cytometry users incorporate cyanine-based conjugates into antibody-like labeling reagents, protein-binding probes, or other fluorescence-tagged constructs to quantify fluorescence intensity across populations. This enables researchers to monitor labeling levels, track relative abundance of labeled targets, and compare experimental conditions in fluorescence-based cytometric readouts, particularly when panel design benefits from red-channel signal placement.

4. Fluorescence Bioassay Development

Cyanine3.5 dimethyl is commonly incorporated into fluorescence assay development for research and industrial R&D settings where a robust fluorophore reporter is needed for signal generation. Assay developers use cyanine-derived fluorescent conjugates to build detection reagents for binding assays, labeling-based screening formats, and other fluorescence readouts in microplate instrumentation. The dye's performance as an optical reporter supports quantitative fluorescence measurement strategies used to monitor assay progress, reagent interactions, or labeled component incorporation in controlled experimental workflows.