MF: C27H28N6O . 3HCl . xH2O, MW: 561.93, ≥98%, Appearance: Yellow to yellow-green crystalline solid. Useful for staining DNA, chromosomes and nuclei. May be used for fluorescence microscopy or flow cytometry. Suitable for vital DNA staining of a variety of cell types and as a probe of membrane permeability in mammalian cells.