SPL Set ID: 6fc6032f-94dc-4067-8b24-01990ec99db0
1 drug(s) with this SPL Set ID
Ambrisentan is 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. It contains a single chiral center determined to be the ( S ) configuration and has the following structural formula: Figure 1 Ambrisentan Structural Formula Ambrisentan is a white to light yellow crystalline powder. It is a carboxylic acid with a pKa of 4.0. It is freely soluble in tetrahydrofuran, sparingly soluble in ethyl acetate, slightly soluble in ethanol, practically insoluble in n-hexane, 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 and contain the following inactive ingredients: croscarmellose sodium, lactose monohydrate, lecithin, magnesium stearate, microcrystalline cellulose, partially hydrolyzed polyvinyl alcohol, polyethylene glycol, povidone, talc and titanium dioxide. Additionally, 5 mg tablet contains: FD&C red#40 aluminum lake. image