Methyl 2-[4-(4-chlorobutanoyl)phenyl]-2-methylpropanoate is a chlorinated aromatic ketone ester used as a pharmaceutical intermediate in the synthesis of fexofenadine hydrochloride. It provides a functionalized aromatic structure for subsequent chemical transformations during pharmaceutical manufacturing.

8-Bromo-7-(but-2-yn-1-yl)-3-methyl-1H-purine-2,6(3H,7H)-dione (CAS 666816-98-4)
API name/end use: Linagliptin Cas number: 666816-98-4 Molecular formula: C10H9BrN4O2 Molecular Weight: 297.11 Appearance: White – Almost white Crystal Powder Storage: Room

