SPL Set ID: 8080b009-361b-4505-b09a-0d91a0e4a2c0
1 drug(s) with this SPL Set ID
Ambrisentan tablets contain ambrisentan, an endothelin receptor antagonist. The chemical name of ambrisentan is (+)-(2 S )-2-[(4,6-dimethylpyrimidin-2-yl)oxy]-3-methoxy-3,3-diphenylpropanoic acid. It has a molecular formula of C 22 H 22 N 2 O 4 and a molecular weight of 378.42 and has the following structural formula: Figure 1 Ambrisentan Structural Formula Ambrisentan is a white to off-white powder. It is a carboxylic acid with a pKa of 4.0. Ambrisentan is practically insoluble in water and in aqueous solutions at low pH. Solubility increases in aqueous solutions at higher pH. In the solid state ambrisentan is very stable, is not hygroscopic, and is not light sensitive. Ambrisentan tablets are available as 5 mg and 10 mg film-coated tablets for once daily oral administration. The tablets include the following inactive ingredients: anhydrous lactose, croscarmellose sodium, FD&C Blue No. 2 Aluminum Lake, FD&C Red No. 40 Aluminum Lake, magnesium stearate, microcrystalline cellulose, polyethylene glycol, polyvinyl alcohol, talc and titanium dioxide. Each round, pink ambrisentan tablet contains 5 mg of ambrisentan. Each capsule shaped, pink ambrisentan tablet contains 10 mg of ambrisentan. Ambrisentan tablets are unscored. Ambrisentan Structural Formula