in this study , biotransformation of isosorbide dinitrate ( isdn ) and glyceryl trinitrate ( gtn ) was estimated by measuring isosorbide mononitrate ( ismn ) and glyceryl dinitrate ( gdn ) , respectively , rather than the nitrate anion , because of a more sensitive method for measurement of ismn and gdn .
C0028125
nitrate
C0064079
ismn