Activator of soluble guanylyl cyclase (sGC); acts at a nitric oxide (NO)-independent regulatory site in the sGC α1 subunit. Inhibits platelet aggregation (IC50 = 36 nM) and phenylephrine-induced contractions of rabbit aorta (IC50 = 0.30 μM). Also reduces vascular smooth muscle growth through cAMP- and cGMP-dependent PKA and PKG pathways. Purity 98%. MW (observed): 360.39