CAS 6399-81-1 appears in our catalog under these names: Triphenylphosphine Hydrobromide, Triphenylphosphine hydrobromide, Triphenylphosphine hydrobromide, 97% , Triphenylphosphonium bromide, 99%, Triphenylphosphine hydrobromide, 98.00%. Offered by: TRC, GLPBio, Thermo Scientific (Alfa Aesar), Thermo Scientific (Acros), Chemat. Available pack sizes: 10g, 50g, 500g, 5g, 25g, 100g, 1kg.