English name: Sildenafil
CAS Number: 139755-83-2
Molecular formula: C22H30N6O4S
Molecular weight: 474.58
EINECS number: 604-158-7


Melting point 187-189°C
Flash point 9℃
Storage conditions Refrigerator
Oral medicine for treating male erectile dysfunction


Sildenafil is an oral drug for the treatment of male erectile dysfunction. It was accidentally discovered when Pfizer Pharmaceuticals of the United States developed a 5-phosphodiesterase inhibitor for the treatment of cardiovascular diseases. Has improved. In March 1998, the U.S. Food and Drug Administration approved a prescription drug for the treatment of male erectile dysfunction, and became the first oral drug specifically for the treatment of male erectile dysfunction in clinical practice.
Common adverse reactions include headache, dizziness, facial flushing, indigestion, nasal congestion, and visual abnormalities. this abnormality may manifest as abnormal blue/green color discrimination, increased light perception, or blurred vision.
More serious adverse reactions also include: decreased supine blood pressure and decreased cardiac output. In addition, clinical studies have shown that having sex after taking sildenafil increases the risk of heart abnormalities, including symptoms such as angina, dizziness, and nausea, and It may cause sudden cardiac death.
Chemical properties Sildenafil Citrate: C22H30N6O4S? C6H8O7. [139755-83-2].
Uses: V-phosphodiesterase inhibitor, used to treat erectile dysfunction.