APHEXDA Powder for solution for injection Ref.[107420] Active ingredients: Motixafortide

APHEXDA for injection contains motixafortide, which is a hematopoietic stem cell mobilizer. The chemical name of the synthetic motixafortide acetate, the active pharmaceutical ingredient is N-(4-Fluoro-benzoyl)-L-arginyl-L-arginyl-[L-3-naphthyl)alanyl]-L-cysteinyl-L-tyrosyl ⁵-L-citrullinyl-L-lysyl-D-lysyl-L-prolyl-L-tyrosyl ¹⁰-L‑arginyl-L-citrullinyl-L-cysteinyl-L-arginineamide, cyclic (4-13)-disulfide, acetate salt. Motixafortide acetate is a synthetic, cyclic peptide composed of a sequence of amino acids with the following structure:

Counter Ion: Acetate

Molecular weight: 2159.6 g/mol (as the free base)

APHEXDA is supplied as a sterile white to off-white, preservative-free lyophilized powder in single-dose vials. Each vial contains 73 mg of motixafortide (provided as motixafortide acetate) for reconstitution with 2 mL 0.45% saline, delivering 62 mg motixfortide per 1.7 mL. Motixafortide is present as a salt with 4 to 8.5 molar equivalents of acetate. The inactive ingredients include 26 mg of mannitol and hydrochloric acid for pH adjustment.

Reconstitution with 2 mL of 0.45% sodium chloride for injection (or 1 mL water for injection + 1 mL 0.9% sodium chloride for injection) yields a clear solution of 36.5 mg/mL motixafortide, pH 5.8 to 7.5.