English name: Win 55,212-2 Mesylate
English Synonyms: Sildenafil Mesylate
CAS: 131543-23-2
MF: C28H30N2O6S
MW: 522.6126
Boiling point: 627.7 ° C at 760 mmHg
Flash Point: 333.4 ° C
Vapor Pressure: 1.14E-15mmHg at 25 ° C
Properties:Solubility: 0.1 M HCl: 0.25 mg / mL
Appearance: White or white crystalline powder, odorless, bitter astringent taste, soluble in water and ethanol
Usage: Pharmaceutical raw materials, aphrodisiac It is medicine treatment raw material, indicated for the treatment of erectile dysfunction.
Sildenafil Mesylate, same as Sildenafil is an inhibitor of type 5 -cGMP phosphodiesterase relaxing and smoothing muscle cells of the corpus cavernosum which leads to penile erection. This relaxation may be
mediated by nitric oxide via cyclic guanosine monophosphate.
pharmaceutical material, hormone. As a cyclic guanosine monophosphate (cGMP) specific phosphodiesterase type 5 (PDE5) selective inhibitor, penile smooth muscle relaxation allows rapid erection. Sildenafil is cheap, is the development and production of low-cost classes available kidney yang-like the perfect material for medicine and health products.
In 16 separate 4-24 week trials of men (over 18 years old) who suffered from impotence for longer than 6 months, dosages between 10-200 mgs were administered. Significant improvements in erectile function, including frequency of penetration as well as erection duration post penetration, were reported with Sildenfi* treatment compared to the placebo group.
Erections were improved in 72% of group verses 18% of the placebo group. In all cases effects were dependant upon dosage and improvement was the greatest when dosage exceeded 100 mgs. Responses were decreased by 40-60% in patients suffering from diabetes and prostatectomy, respectively. Withdrawal rates were less than 5% related to negative side effects and limited response rates.
Test Items |
Specification |
Test Results |
Description |
White or almost white crystalline powder |
White crystalline powder |
Melting Point |
191.0~193.0°C |
192°C |
Loss of drying |
≤1.0% |
0.5% |
Heavy Metal |
≤20ppm |
15ppm |
TLC |
Only one spot |
Only one spot |
Assay |
≥99.5% |
99.91% |
Conclusion |
It complies with the USP 32 |