The molecule is a cationic fluorescent dye derived from 9-phenylxanthene. It has a role as a fluorochrome. It is a xanthene dye and an iminium ion.
[9-[2-[4-(2,5-dioxopyrrolidin-1-yl)oxycarbonylpiperidin-1-yl]sulfonylphenyl]-6-(N-methylanilino)xanthen-3-ylidene]-methyl-phenylazanium