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Sildenafil EP Impurity D

Sildenafil EP Impurity D features a distinct structural motif, with a sulfonamide group and a pyrazolopyrimidinone core, differing from the parent drug by a specific functional group substitution. Its chemical relationship to Sildenafil involves a degradation pathway. It serves as an HPLC reference standard.

On Request
Molecular Formula C17H20N4O5S
Molecular Weight 392.4000
CAS Number 1357931-55-5 ✓ Verified
PubChem CID 135565561 ↗
Purity N/A
Product Type API Impurity
Parent Drug Sildenafil
Lead Time On Request
IUPAC Name 4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-5-yl)benzenesulfonic acid

📝 Synonyms

1357931-55-5 Demethylpiperazinyl Sildenafil Sulfonic Acid Des(methylpiperazinyl) sildenafil acid 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)benzenesulfonic acid XVD449DO1O Sildenafil desmethylpiperazinyl sulfonic acid Sildenafil citrate impurity D [EP] 4-Ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo(4,3-d)pyrimidin-5-yl)benzenesulfonic acid Benzenesulfonic acid, 3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo(4,3-d)pyrimidin-5-yl)-4-ethoxy- DEMETHYLPIPERAZINYLSILDENAFIL SULFONIC ACID

🔬 Chemical Identifiers

CCCC1=NN(C2=C1N=C(NC2=O)C3=C(C=CC(=C3)S(=O)(=O)O)OCC)C
InChI=1S/C17H20N4O5S/c1-4-6-12-14-15(21(3)20-12)17(22)19-16(18-14)11-9-10(27(23,24)25)7-8-13(11)26-5-2/h7-9H,4-6H2,1-3H3,(H,18,19,22)(H,23,24,25)
DFABUTFBIDMPKZ-UHFFFAOYSA-N

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