CAS 253597-19-2 appears in our catalog under these names: Clevidipine Impurity 2, Clevidipine Impurity 1, Clevidipine Impurity C, Bis((butyryloxy)methyl) 4-(2,3-dichlorophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate. Offered by: Chemat Brand, Hubei YoungXin, TRC. Available pack sizes: on request, 10mg, 25mg, 50mg, 100mg, 200mg, 250mg.