Hexidium Iodide | CAS 211566-66-4

Hexidium Iodide is a cationic nucleic-acid stain used to visualize DNA and RNA in fluorescence microscopy workflows. Its iodide counterion and membrane-interacting, highly charged structure support strong nucleic-acid association, making it a common reagent for nucleic-acid localization studies and fluorescence-based sample screening. Hexidium Iodide is frequently selected when researchers need a robust nucleic-acid labeling dye compatible with standard fluorescence imaging and nucleic-acid staining protocols.

1. Fluorescence Microscopy Staining

Hexidium Iodide is used as a nucleic-acid stain for fluorescence microscopy of fixed cells and prepared samples where DNA/RNA visualization is required. Researchers employ it to assess nuclear staining patterns, quantify relative nucleic-acid content in imaging experiments, and support qualitative localization of nucleic-acid-rich regions. In microscopy workflows, Hexidium Iodide is commonly paired with epifluorescence or confocal imaging setups using appropriate filter sets for the dye's emission, enabling straightforward incorporation into multi-stain experiments where nucleic-acid signal provides a structural reference.

2. Flow Cytometry Nucleic-Acid Readout

Hexidium Iodide is applied in flow cytometry as a DNA/RNA fluorescence label for cell population analysis and nucleic-acid content readouts. In cytometry workflows, it is used to stain prepared cell suspensions so that fluorescence intensity can be correlated with nucleic-acid-associated signal across samples. Many users incorporate Hexidium Iodide into staining panels for sample qualification, gating support, and comparative studies where nucleic-acid staining serves as a consistent reference channel alongside other fluorescent markers.

3. Nucleic Acid Gel Staining

Hexidium Iodide is also used for fluorescence-based staining of nucleic acids in gel electrophoresis workflows, supporting visualization of DNA or RNA bands after separation. In molecular biology and analytical chemistry laboratories, researchers use Hexidium Iodide to monitor sample integrity, confirm fragment presence, and compare relative nucleic-acid amounts across lanes. Its nucleic-acid affinity and fluorescence readout make it a practical staining option for routine gel imaging using standard gel documentation systems configured for the dye's spectral output.

4. Microbial Nucleic-Acid Visualization

Hexidium Iodide is used to stain nucleic acids in microbial staining and imaging workflows where visualization of microbial DNA/RNA is needed. Researchers apply it to prepared microbial samples to support fluorescence microscopy assessment of nucleic-acid-containing structures and to distinguish nucleic-acid signal from background in imaging-based screening. This application is particularly useful in chemical biology and microbiology research settings where nucleic-acid staining provides a direct fluorescent readout of microbial material in microscopy or imaging assays.