CAS 509-34-2 appears in our catalog under these names: Solvent Red 49, Solvent red 49, Rhodamine B base, 97%, Rhodamine B base, 97.00%, Rhodamine B base 97%. Offered by: Dr. Ehrenstorfer, GLPBio, Thermo Scientific (Acros), Chemat, Ambeed. Available pack sizes: 100mg, 250g, 50g, 25g, 100g, 10g, 500g, 1000g.