immediately after admixture and at 3 , 6 , 12 , and 24 hours , samples were visually inspected , tested for ph , filtered , and assayed in duplicate by high-performance liquid chromatography for theophylline concentration and for both methylprednisolone sodium succinate and methylprednisolone alcohol content .
C0700546
methylprednisolone
C0025815
methylprednisolone