SPL Set ID: cbdbd4b2-c07b-00e1-e053-2995a90a5fc9

Linagliptin tablets contain, as the active ingredient, an orally-active inhibitor of the dipeptidyl peptidase-4 (DPP-4) enzyme. Linagliptin is described chemically as 1H-Purine-2,6-dione, 8-[(3R)-3-amino-1-piperidinyl]-7-(2-butyn-1-yl)-3,7-dihydro-3-methyl-1-[(4-methyl-2-quinazolinyl)methyl]- The empirical formula is C 25 H 28 N 8 O 2 and the molecular weight is 472.54 g/mol. The structural formula is: Linagliptin is a white to yellowish, not or only slightly hygroscopic solid substance. It is very slightly soluble in water (0.9 mg/mL). Linagliptin is soluble in methanol (ca. 60 mg/mL), sparingly soluble in ethanol (ca. 10 mg/mL), very slightly soluble in isopropanol (<1 mg/mL), and very slightly soluble in acetone (ca. 1 mg/mL). Each film-coated tablet of linagliptin contains 5 mg of linagliptin free base and the following inactive ingredients: mannitol, pregelatinized starch, copovidone, and magnesium stearate. In addition, the film coating contains the following inactive ingredients: hypromellose, titanium dioxide and polyethylene glycol. Linagliptin structure