CAS Registry Number

CAS 509-34-2 — Rhodamine B base (C.I.45170)

Rhodamine B base (C.I. 45170) is a bright pink fluorescent dye widely used in biological staining, flow cytometry, and laser marking applications due to its strong absorption and emission properties. This synthetic organic compound is also employed in textiles, plastics, and as a tracer in environmental studies. It has a CAS number of 509-34-2, a molecular formula of C28H30N2O3, and a molecular weight of 442.5494 g/mol. Store at ambient conditions, but handle with care as it carries a **Danger** signal word for toxicity and environmental hazards. Molekula supplies Rhodamine B base from research to bulk quantities with full documentation and ISO 9001:2015 traceability.