CAS 4196-99-0 appears in our catalog under these names: Biebrich scarlet, Biebrich Scarlet sodium salt , Biebrich Scarlet (C.I. 26905), 90.00%, Biebrich scarlet, Biebrich Scarlet, dye content approx. 70%. Offered by: GLPBio, Thermo Scientific (Alfa Aesar), Chemat, Biosynth, Thermo Scientific (Acros). Available pack sizes: 100g, 500g, 25g, 50g, 250g, 25 g, 5g.