CAS 39389-20-3 appears in our catalog under these names: Amberlite® IR120 (H+), Amberlyst? 15 ion–exchange resin, Amberlyst®15 ion–exchange resin, Amberlyst« 15(H), wet, ion exchange resin , Amberlyst« 15(H), ion exchange resin . Offered by: TRC, GLPBio, Thermo Scientific (Alfa Aesar), Ambeed, Sigma-Aldrich. Available pack sizes: 10g, 5g, 1l, 2,5l, 250ml, 250g, 1kg, 5kg.