CAS Registry Number

CAS 548-24-3 — Eosin B (C.I. 45400)

Eosin B (C.I. 45400) is a synthetic fluorescent dye belonging to the xanthene family, widely used in biology for staining tissues, microscopy, and as a tracer in flow cytometry. It is also applied in food coloring and some industrial dye formulations. This chemical has a CAS number of 548-24-3, with the molecular formula C20H6Br2N2Na2O9 and a molecular weight of 624.06. It is stored at ambient conditions and classified with a signal word of "Danger" due to its hazardous properties. Molekula supplies Eosin B from research to bulk quantities with full documentation and ISO 9001:2015 traceability.