Also available in 1 mL, 1 mg, 10 mg, 25 mg, 50 mg, 100 mg, 500 mg and bulk. Please contact Fisher for quotes. PRX-08066, a selective 5-hydroxytryptamine receptor 2B (5-HT2BR, IC50= 3.4 nM) antagonist, induces selective vasodilation of pulmonary arteries. Purity 98.07%