SPL Set ID: 3e7e7cd3-8efa-4d91-a5ab-7fd78b0cc65e

Eptifibatide is a cyclic heptapeptide containing 6 amino acids and 1 mercaptopropionyl (des-amino cysteinyl) residue. An interchain disulfide bridge is formed between the cysteine amide and the mercaptopropionyl moieties. Chemically it is N 6 -(aminoiminomethyl)-N 2 -(3-mercapto-1-oxopropyl)-L-lysylglycyl-L-α-aspartyl-L-tryptophyl-L-prolyl-L-cysteinamide, cyclic (1→6)-disulfide. Eptifibatide binds to the platelet receptor glycoprotein (GP) IIb/IIIa of human platelets and inhibits platelet aggregation. The eptifibatide peptide is produced by solid-phase peptide synthesis, and is purified by preparative reverse-phase liquid chromatography and lyophilized. The structural formula is: Eptifibatide Injection is a clear, colorless, sterile, nonpyrogenic solution for intravenous (IV) use with an empirical formula of C 35 H 49 N 11 O 9 S 2 and a molecular weight of 831.96. Each 10 mL single-dose vial contains 2 mg per mL of Eptifibatide Injection and each 100 mL single-dose vial contains 0.75 mg per mL of Eptifibatide Injection. Each vial of either size also contains 5.25 mg per mL citric acid monohydrate and sodium hydroxide to adjust the pH to 5.35. structural formula