The nitrates which can undergo the ﬁrst-pass metabolism:
Organic nitrates are lipid-soluble: well absorbed from buccal mucosa, intestines and skin. Ingested orally, all except isosorbide mononitrate undergo extensive and variable first pass metabolism in liver.They are rapidly denitrated by a glutathione reductase and a mitochondrial aldehyde dehydrogcnase.
 
Reference: Essentials of Medical Pharmacology Eighth Edition KD TRIPATHI page no 587
Nitroglycerine
Pentaerythritol tetranitrate
Isosorbide dinitrate
All of the above