Brilliantkresüülsinine

Brilliantkresüülsinine is a synthetic organic dye. It belongs to the class of oxazine dyes. Chemically, it is known as 3-amino-7-(dimethylamino)-2-methylphenoxazin-5-ium-3'-carboxylic acid inner salt. Its chemical formula is C17H19N3O3S.

This dye is primarily used in histology and cytology as a biological stain. It stains cell nuclei, chromosomes, and cytoplasm. Brilliantkresüülsinine is particularly useful for staining the reticular substance of red blood cells, making it valuable in hematology for identifying reticulocytes. It is also employed in the study of microorganisms and in some biochemical assays.

The dye typically appears as a dark green or blue powder. When dissolved, it forms a blue or violet solution. Its staining properties are attributed to its ability to bind with nucleic acids and proteins within cells through electrostatic interactions. The intensity and specificity of the staining can vary depending on factors such as pH and the concentration of the dye solution. Brilliantkresüülsinine is sometimes used in combination with other stains to achieve differential staining of various cellular components. Its applications extend to research laboratories and clinical diagnostic settings where detailed cellular analysis is required.