5-Aminosalicylic acid-d7 (5-ASA-d7, Mesalamie-d7, Mesalazie-d7) is deuterium labeled 5-Aminosalicylic Acid. 5-Aminosalicylic acid (Mesalamine) acts as a specific PPARgamma agonist and also inhibits p21-activated kinase 1 (PAK1) and NF-kappaB. 5-Aminosalicylic acid can inhibit the activity of osteopontin (OPN)[1].