CAS 1100676-20-7 appears in our catalog under these names: Cisatracurium EP Impurity F Besylate, Atracurium Impurity 9（Cisatracurium Besilate EP Impurity F）. Offered by: Chemat Brand, Hubei YoungXin. Available pack sizes: on request, 10mg, 25mg, 50mg, 100mg, 200mg.