Safranin (Basic Red 2) is an industrial dyes.

Phenosafranine, a phenazine dye, exhibits a higher binding affinity for triplex RNA over its parent duplex form, with intercalation as the binding mechanism for both RNA structures. This compound is applicable in staining plant cells and determining levels of hemoglobin, dopamine, serotonin, among other uses [1] [2] [3].