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Sildenafil EP Impurity D

Sildenafil EP Impurity D

Product Description
CAT No.
ALN-S006005
CAS No.
1357931-55-5
Mol. F.
C17H20N4O5S
Mol. Wt.
392.4
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Chemical Name : 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid (as per EP)
Smiles : O=S(C1=CC=C(OCC)C(C2=NC3=C(N(C)N=C3CCC)C(N2)=O)=C1)(O)=O
Inchi : InChI=1S/C20H26N6O4S/c1-4-5-15-17-18(25(3)23-15)20(28)22-19(21-17)14-12-13(6-7-16(14)27)31(29,30)26-10-8-24(2)9-11-26/h6-7,12,27H,4-5,8-11H2,1-3H3,(H,21,22,28)
Synonym : Desmethylpiperazinyl Sildenafil Sulfonic Acid

Quantification of active pharmaceutical ingredient and impurities in sildenafil citrate obtained from the Internet

Michael A Veronin , Mohammad T Nutan , Uday Krishna Reddy DodlanTher Adv Drug Saf. 2014 Oct;5(5):180-9

Validated Methods for Determination of Sildenafil Citrate in The Presence of its Potential Impurities

A.E. El-Gindy , E. Shokry M. Farouk , L. Abd El-Aziz – J Biomed Sci and Res., Vol 2 (4), 2010,262-278

Validated LC method for sildenafil citrate related substances and its potential oxidative degradation product

A.Nageswari, P.Surya Prakash Rao, B.Gowri Sankar Rao, B.Satyanarayana , M.Saravanan , V.Ranga Reddy , Mukkanti – ACAIJ, 10(10) 2011 683-690

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