SPL Set ID: f2423edd-6d24-495c-aec1-c2f457f08d9a

Talazoparib is an inhibitor of mammalian polyadenosine 5'-diphosphoribose (ADP-ribose) polymerase (PARP) enzymes. The chemical name of talazoparib tosylate is (8 S ,9 R )-5-Fluoro-8-(4-fluorophenyl)-9-(1-methyl-1 H -1,2,4-triazol-5-yl)-2,7,8,9-tetrahydro-3 H -pyrido[4,3,2- de ]phthalazin-3-one 4-methylbenzenesulfonate (1:1). The chemical formula of talazoparib tosylate is C 26 H 22 F 2 N 6 O 4 S, and the relative molecular mass is 552.56 Daltons. The chemical structure of talazoparib tosylate is shown below: Talazoparib tosylate is a white to yellow solid. TALZENNA capsules for oral use are available as: • 0.1 mg hard hypromellose (HPMC) capsule that contains 0.145 mg talazoparib tosylate equivalent to 0.1 mg talazoparib free base, or • 0.25 mg HPMC capsule that contains 0.363 mg talazoparib tosylate equivalent to 0.25 mg talazoparib free base, or • 0.35 mg HPMC capsule that contains 0.509 mg talazoparib tosylate equivalent to 0.35 mg talazoparib free base, or • 0.5 mg HPMC capsule that contains 0.727 mg talazoparib tosylate equivalent to 0.5 mg talazoparib free base, or • 0.75 mg HPMC capsule that contains 1.09 mg talazoparib tosylate equivalent to 0.75 mg talazoparib free base, or • 1 mg HPMC capsule that contains 1.453 mg talazoparib tosylate equivalent to 1 mg talazoparib free base. Inactive ingredients: silicified microcrystalline cellulose (sMCC). The capsule shells contain hypromellose (HPMC), yellow iron oxide, red iron oxide and titanium dioxide; and the printing ink contains shellac, black iron oxide, potassium hydroxide, ammonium hydroxide, and propylene glycol. Chemical Structure