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Active Pharmaceutical Ingredients

Sildenafil Citrate

CAS No : 171599-83-0

Structure :

IUPAC 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 : 474.6 g/mol

Sildenafil, sold under the brand name Viagra among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. It is unclear if it is effective for treating sexual dysfunction in women. It is taken by mouth or injection into a vein. Onset is typically within 20 minutes and lasts for about 2 hours. A dose of 25-100 mg should be taken four hours prior to activity. Sildenafil acts by blocking phosphodiesterase 5 (PDE5), an enzyme that promotes breakdown of cGMP, which regulates blood flow in the penis. It requires sexual arousal, however, to work. sildenafil citrate supplier. It also results in dilation of the blood vessels in the lungs.


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