CAS 190730-39-3 (free base) appears in our catalog under these names: Bepotastine Ethyl Ester Besylate, Bepotastine Impurity 5 (Bepotastine Ethyl Ester Besylate). Offered by: Chemat Brand, Hubei YoungXin. Available pack sizes: on request, 10mg, 25mg, 50mg, 100mg, 200mg.