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Name:Sildenafil citrate Molecular Formula:C28H38N6O11S CAS Registry Number:171599-83-0 Synonyms:Piperazine,1-[[3-(4,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4- ethoxyphenyl]sulfonyl]-4-methyl-(9CI); 5-[2-Ethoxy-5-(4-methyl-1-piperazinylsulfonyl)phenyl]-1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one; Revatio; InChI:InChI=1S/C22H30N6O4S/c1-5-7-17-19-20(27(4)25-17)22(29)24-21(23-19)16-14-15(8-9-18(16)32-6-2)33(30,31)28- 12-10-26(3)11-13-28/h8-9,14H,5-7,10-13H2,1-4H3,(H,23,24,29) Appearance:White Solid Molecular Weight:474.5764 Density:1.447g/cm3 Boiling Point:672.4 °C at 760 mmHg Melting Point:187-189°C Flash Point:360.5 °C Refractive index:1.683 Solubility:insoluble in water, ethanol Biological Activity:Orally active, potent inhibitor of phosphodiesterase 5 (PDE5) (IC 50 = 4 nM). Enhances nitric oxide-dependent relaxation of human corpus cavernosum in vitro . Usage:Sildenafil Citrate is used as an orally active selective type 5 cGMP phosphodiesterase inhibitor.
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