Proflavine hemisulfate is an acridine-derived fluorescent contrast and disinfectant agent potentially used for cellular imaging and antiseptic purposes.

Basic Orange 14是一种能穿透细胞的核酸选择性荧光染料，与单链DNA（ssDNA）或RNA结合时产生橙色荧光，与双链DNA（dsDNA）结合时产生绿色荧光（激发波长488 nm，发射波长530 nm为绿色荧光，640 nm为橙色荧光）。

Rhodamine B is used in biology as a staining fluorescent dye, applied in fluorescence microscopy, flow cytometry, fluorescence correlation spectroscopy and ELISA.