Product Name: Sildenafil Citrate

Chemical Name: 1-[[3-(6,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]-4-methylpiperazine citrate

Molecular Formula:C28H38N6O11S

Molecular Weight:666.7

Standard:USP32

Appearance: White Crystalline Powder

CAS NO.: 171599-83-0

Assay: 99% Min

Usage: An orally active selective type GMP phosphodiesterase inhibitor. pharmaceutical material

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 .