7H-Pyrrolo[3,2-f]quinazoline-1,3-diaMine, N3-cyclopropyl-7-[[4-(1-Methylethyl)phenyl]Methyl]-, (Hydrochloride) (1:2)

SCH 79797 is a non-peptide antagonist of proteinase-activated receptor 1 (PAR1). It blocks binding of the high affinity thrombin receptor-activating peptide (haTRAP) (IC₅₀ = 70 nM) as well as platelet aggregation induced by either haTRAP or α-thrombin (IC₅₀ = 0.3 and 3 μM, respectively). SCH 79797 has no activity against PAR2, PAR4, or other receptors involved in platelet activation. It also blocks PAR1 activation on vascular smooth muscle cells and endothelial cells.

SCH 79797 Dihydrochloride is a selective PAR1 antagonist.

N3-Cyclopropyl-7-[[4-(1-methylethyl)phenyl]methyl]-7H-pyrrolo[3,2-f]quinazoline-1,3-diamine Dihydrochloride is a selective PAR1 antagonist which was shown to limit myocardial ischemia/reperfusion injury in rat hearts.

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