the plasma concentrations of isosorbide dinitrate ( isdn ) and its two pharmacologically active metabolites isosorbide 2-mononitrate ( is-2-mn ) and isosorbide 5-mononitrate ( is-5-mn ) were determined after oral administration of 20 mg isdn and 20 mg of each of the mononitrates .
C0022252
isosorbide dinitrate
C0064079
isosorbide 5-mononitrate