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1 .     sildenafil
    ÏàËÆ¶È:90.9%
Chemical & Pharmaceutical Bulletin          2009          57          185-189
Isolation and Structural Elucidation of Cyclopentynafil and N-Octylnortadalafil Found in a Dietary Supplement
Takashi Hasegawa, Kazunaga Takahashi, Masaaki Saijo, Toshiyasu Ishii, Tomoko Nagata, Masaaki Kurihara, Yuji Haishima, Yukihiro Goda and Nobuo Kawahara
Structure      13C NMR    Structure & 13C NMR     Ì¼Æ×Ä£Äâͼ
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2 .     (E)-5-(5-(1,2-Dichlorov inyl)-2-ethoxylphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one
    ÏàËÆ¶È:80%
Chemical & Pharmaceutical Bulletin          2013          61          572-575
Efficient Synthesis of Dichlorodenafil, an Unapproved Sildenafil Analogue Appearing in Non-prescription Supplements
Jong Yup Kim, In Gyun Hwang, Jae Ho Oh, Il Hyun Kang, Sung Won Kwon, Deukjoon Kim
Structure      13C NMR    Structure & 13C NMR     Ì¼Æ×Ä£Äâͼ
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3 .     (Z)-5-(5-(1,2-Dichlorov inyl)-2-ethoxylphenyl)-1-methyl-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-7(6H)-one
    ÏàËÆ¶È:75%
Chemical & Pharmaceutical Bulletin          2013          61          572-575
Efficient Synthesis of Dichlorodenafil, an Unapproved Sildenafil Analogue Appearing in Non-prescription Supplements
Jong Yup Kim, In Gyun Hwang, Jae Ho Oh, Il Hyun Kang, Sung Won Kwon, Deukjoon Kim
Structure      13C NMR    Structure & 13C NMR     Ì¼Æ×Ä£Äâͼ
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4 .     dimethylacetildenafil
C25H34O3N6     ÏàËÆ¶È:68.1%
Turkish Journal of Chemistry          2010          34          157-163
Isolation and identification of a new acetildenafil analogue used to adulterate a dietary supplement: dimethylacetildenafil
ALİ HAKAN GÖKER, MAKSUT COŞKUN, MEHMET ALP
Structure      13C NMR    Structure & 13C NMR     Ì¼Æ×Ä£Äâͼ
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5 .     5-[2,3-dihydro-5-(4-methylpiperazin-1-ylsulfonyl)-7-benzofuryl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
C22H28N6O4S     ÏàËÆ¶È:65%
Zeitschrift f¨¹r Naturforschung B          1999          54          1469-1473
Synthesis and Properties of Biagra. A 5-(2,3-Dihydro-7-benzofuryl)Analog of ViagraR
W. Voelter, M. M. El-Abadelah, S. S. Sabri, and M. A. Khanfar
Structure      13C NMR    Structure & 13C NMR     Ì¼Æ×Ä£Äâͼ
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