van Giersbergen PL, Treiber A, Dingemanse J. In vitro and in vivo pharmacokinetic characteristics of clazosentan, an intravenous endothelin receptor antagonist, in humans. Int J Clin Pharmacol Ther. 2009 Mar;47(3):169–77. doi: 10.5414/cpp47169. PMID: 19281726.