SPL Set ID: c006d8ef-8cb7-4fb3-88eb-b2debc302a20
1 drug(s) with this SPL Set ID
Bosentan is an endothelin receptor antagonist that belongs to a class of highly substituted pyrimidine derivatives, with no chiral centers. It is designated chemically as 4-tert-butyl-N-[6-(2-hydroxy-ethoxy)-5-(2-methoxy-phenoxy)-[2,2’]-bipyrimidin-4-yl]-benzenesulfonamide monohydrate and has the following structural formula: Bosentan has a molecular weight of 569.63 and a molecular formula of C 27 H 29 N 5 O 6 S•H 2 O. Bosentan is a white to off-white crystalline powder. It is poorly soluble in water. In the solid state, bosentan is very stable, is not hygroscopic and is not light sensitive. Bosentan is available as 62.5 mg and 125 mg film-coated tablets for oral administration, and contains the following excipients: corn starch, ethylcellulose, glyceryl behenate, hydroxypropylmethylcellulose, iron oxide red, iron oxide yellow, magnesium stearate, povidone, pregelatinized maize starch, sodium starch glycolate, talc, titanium dioxide, and triacetin. Each bosentan 62.5 mg tablet contains 64.541 mg of bosentan monohydrate, equivalent to 62.5 mg of anhydrous bosentan. Each bosentan 125 mg tablet contains 129.082 mg of bosentan monohydrate, equivalent to 125 mg of anhydrous bosentan. spl-bosentan-structure