Pyronin Y

Pyronin Y is a cationic dye commonly used in histology, cytology, and molecular biology for staining nucleic acids, particularly RNA. It is known for its ability to bind selectively to RNA, producing a strong red or pink fluorescence under appropriate lighting conditions. Pyronin Y is often employed in fluorescence microscopy to visualize RNA distribution within cells, providing valuable insight into RNA localization, synthesis, and degradation. Additionally, Pyronin Y can be used in conjunction with other stains to differentiate between RNA and DNA in tissue sections, offering a clear contrast for cellular studies.