CAS 920275-25-8 appears in our catalog under these names: Nebivolol Impurity 12 HCl (RR,RR), Nebivolol Impurity 9(RR,RR), Nebivolol Impurity 19 (RRRR-Nebivolol). Offered by: Chemat Brand, Hubei YoungXin. Available pack sizes: on request, 10mg, 25mg, 50mg, 100mg, 200mg.