SPL Set ID: 42e99112-c402-4662-877f-9e3a84dff9f2

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 g/mol (hydrochloride salt) and 357.4 g/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 powder that is soluble in methanol or 95% ethanol and slightly soluble in water. 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, film-coated, oval shaped tablets for oral administration in strengths of 30 mg, 60 mg, and 90 mg of cinacalcet as the free base equivalent (33 mg, 66 mg, and 99 mg as the hydrochloride salt, respectively). Inactive Ingredients The following are the inactive ingredients in cinacalcet tablets: colloidal silicon dioxide, crospovidone, FD&C blue #2/indigo carmine aluminum lake, hypromellose, iron oxide yellow, lactose monohydrate, microcrystalline cellulose, polyethylene glycol, pregelatinized starch (maize), sodium stearyl fumarate, titanium dioxide and triacetin. Chemical Structure