Sildenafil EP Impurity C (CAS No: 139755-91-2) or 5-[2-Hydroxy-5-(4-methylpiperazinylsulphonyl)phenyl]1-methyl-3-n-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyramidin-7-one,Sildenafil EP Impurity C is an impurity of Sildenafil,is prolonging vasodilatory response,improving erection by inhibits cGMP.
References
Barbas, Rafael, et al. “The Solid State Landscape of the Sildenafil Drug.†Journal of Pharmaceutical Sciences, vol. 111, no. 4, Apr. 2022, pp. 1104–9, https://doi.org/10.1016/j.xphs.2021.08.019.
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