5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one

• CAT Number: R005367
• CAS Number: 139756-22-2
• Molecular Formula: C17H19ClN4O4S
• Molecular Weight: 410.873
• Purity: ≥95%
• Synonyms: 3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxy-benzenesulfonyl Chloride
• Storage: -20°C
• IUPAC Name: 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-4H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonyl chloride
• InChI: InChI=1S/C17H19ClN4O4S/c1-4-6-12-14-15(22(3)21-12)17(23)20-16(19-14)11-9-10(27(18,24)25)7-8-13(11)26-5-2/h7-9H,4-6H2,1-3H3,(H,19,20,23)
• InChIKey: RVVOSOSBFSYZDM-UHFFFAOYSA-N
• SMILES: CCCC1=NN(C2=C1NC(=NC2=O)C3=C(C=CC(=C3)S(=O)(=O)Cl)OCC)C

5-(5-Chlorosulfonyl-2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one (CAS 139756-22-2)  is a derivative of Sildenafil.

Reference

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2.Truss, Michael C., and Christian G. Stief. "Phosphodiestersse Inhibitors in the Treatment of Erectile Dysfunction." Drugs of Today 34.9 (1998): 805-812.
3.Mesaik, Muhammad A., et al. "Synthesis and immunomodulatory properties of selected oxazolone derivatives." Bioorganic & medicinal chemistry 12.9 (2004): 2049-2057.