SPL Set ID: 0837aabc-e796-0e07-8958-71f1ff6e89bf

Cinacalcet tablets contain the hydrochloride salt of the active ingredient cinacalcet, a positive modulator of the calcium sensing receptor. The molecular formula for cinacalcet is C 22 H 22 F 3 N⋅HCl with a molecular weight of 393.9 grams/mol (hydrochloride salt) and 357.4 grams/mol (free base). It has one chiral center having an R-absolute configuration. The R-enantiomer is the more potent enantiomer and has been shown to be responsible for pharmacodynamic activity. The hydrochloride salt of cinacalcet is a white to off-white coloured crystalline powder, that is soluble in ethanol and methanol. The hydrochloride salt of cinacalcet is described chemically as N-[1-(R)-(-)-(1-naphthyl)ethyl]-3-[3-(trifluoromethyl)phenyl]-1-aminopropane hydrochloride and has the following structural formula: Cinacalcet tablets are formulated as light green, oval-shaped, film-coated tablets for oral administration in strengths of 30 mg, 60 mg, and 90 mg of cinacalcet as the free base equivalent (33.06 mg, 66.12 mg, and 99.18 mg as the hydrochloride salt, respectively). Inactive Ingredients The following are the inactive ingredients in cinacalcet tablets: colloidal silicon dioxide, crospovidone, magnesium stearate, microcrystalline cellulose, povidone and pregelatinized starch (modified corn (maize) starch). Tablets are coated with color (Opadry II green) FD&C blue #2, hypromellose, iron oxide yellow, lactose monohydrate, titanium dioxide and triacetin.