5-{2-ethoxy-5-[(4-methylpiperazin-1-yl)sulfonyl]phenyl}-1-methyl-3-propyl-1H,6H,7H-pyrazolo[4,3-d]pyrimidin-7-one

• ChemBase ID: 177710
• Molecular Formular: C22H30N6O4S
• Molecular Mass: 474.5764
• Monoisotopic Mass: 474.20492447
• SMILES: C1N(CCN(C1)S(=O)(=O)c1ccc(c(c1)c1nc2c(c(=O)[nH]1)n(nc2CCC)C)OCC)C
• Canonical SMILES: CCCc1nn(c2c1nc([nH]c2=O)c1cc(ccc1OCC)S(=O)(=O)N1CCN(CC1)C)C
• InChI: InChI=1S/C22H30N6O4S/c1-5-7-17-19-20(27(4)25-17)22(29)24-21(23-19)16-14-15(8-9-18(16)32-6-2)33(30,31)28-12-10-26(3)11-13-28/h8-9,14H,5-7,10-13H2,1-4H3,(H,23,24,29)
• InChIKey: BNRNXUUZRGQAQC-UHFFFAOYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: 5-{2-ethoxy-5-[(4-methylpiperazin-1-yl)sulfonyl]phenyl}-1-methyl-3-propyl-1H,6H,7H-pyrazolo[4,3-d]pyrimidin-7-one
• IUPAC Traditional name: sildenafil
• Synonyms: 1-[[3-(4,7-Dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)-4-ethoxyphenyl]sulfonyl]-4-methylpiperazine; 5-[2-Ethoxy-5-[(4-methyl-1-piperazinyl)sulfonyl]phenyl]-1,6-dihydro-1-methyl-3-propyl-7H-pyrazolo[4,3-d]pyrimidin-7-one; Sildenafil

Database IDs

• CAS Number: 139755-83-2
• PubChem SID: 164233620
• PubChem CID: 5212

CALCULATED PROPERTIES

• Acid pKa: 7.6270576
• H Acceptors: 7
• H Donor: 1
• LogD (pH = 5.5): 0.7387564
• LogD (pH = 7.4): 1.158596
• Log P: 1.229504
• Molar Refractivity: 139.8739 cm^3
• Polarizability: 48.292347 Å^3
• Polar Surface Area: 109.13 Å^2
• Rotatable Bonds: 6
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Solubility: DMSO; Methanol
• Apperance: White Solid
• Melting Point: 188-190°C (dec.)

Safety Information

• Storage Condition: Refrigerator

Product Information

• Purity: 96%; 98%

DETAILS

Toronto Research Chemicals - S435001

An orally active selective type 5 cGMP phosphodiesterase inhibitor.

REFERENCES

• Terrett, N.K., et al.: Bioorg. Med. Chem. Lett., 6, 1819 (1996)
• Goldstein, I., et al.: N. Engl. J. Med., 338, 1397 (1996)