Chemical Name: 5-(2-Ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazole[4,3-d]pyrimidine-7-one
Smiles: O=C1C(N(C)N=C2CCC)=C2N=C(C3=CC=CC=C3OCC)N1
Inchi: InChI=1S/C9H12N4/c1-6(2)3-7-9-8(13-12-7)4-10-5-11-9/h4-6H,3H2,1-2H3,(H,12,13)
Quantification of active pharmaceutical ingredient and impurities in sildenafil citrate obtained from the Internet
Michael A Veronin , Mohammad T Nutan , Uday Krishna Reddy Dodla
Ther 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]
Determinaton of sildenafil citrate and related substances in the commercial products and tablet dosage form using HPLC
N Daraghmeh, M Al-Omari, A.ABadwan, A.M.YJaber
Journal of Pharmaceutical and Biomedical Analysis Volume 25, Issues 3–4, June 2001, Pages 483-492