Aprocitentan D4 (ACT-132577 D4) is a deuterium-labeled Aprocitentan. Aprocitentan is a major and pharmacologically active metabolite of Macitentan. Aprocitentan is a dual ETA ETB antagonist (IC50s: 3.4 nM and 987 nM; pA2s: 6.7 and 5.5).
Dabigatran D4 hydrochloride is deuterium-labeled dabigatran, which is a reversible and selective direct thrombin inhibitor (DTI) with a Ki value of 4.5 nM.
Delamanid D4 is deuterium-labeled Delamanid. Delamanid is a newer mycobacterial cell wall synthesis inhibitor that inhibits the synthesis of mucus acid.