S

Sildenafil

IUPAC: 5-[2-ethoxy-5-(4-methylpiperazin-1-yl)sulfonylphenyl]-1-methyl-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-7-one

C22H30N6O4S Organic Compounds CAS 139755-83-2
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Quick Reference
Formula / NotationC22H30N6O4S
CAS Number139755-83-2
Molecular Weight474.6
Melting Point189-190 °C
Solubility3.5 mg/mL
AppearanceSolid
Also Known As5-[2-ethoxy-5-(4-methylpiperazin-1-yl)sulfonylphenyl]-1-methyl-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-7-one; 139755-83-2; Aphrodil; Vizarsin; Sildenafilo; Patrex; Sildenafil teva; Sildenafil actavis; Sildenafil ratiopharm; 3M7OB98Y7H
CategoryOrganic Compounds

What is Sildenafil?

Sildenafil is a pyrazolo[4,3-d]pyrimidin-7-one having a methyl substituent at the 1-position, a propyl substituent at the 3-position and a 2-ethoxy-5-[(4-methylpiperazin-1-yl)sulfonyl]phenyl group at the 5-position. It has a role as a vasodilator agent and an EC 3.1.4.35 (3',5'-cyclic-GMP phosphodiesterase) inhibitor. It is a member of piperazines, a sulfonamide and a pyrazolopyrimidine.

Formula & Notation

C22H30N6O4S

IUPAC Name: 5-[2-ethoxy-5-(4-methylpiperazin-1-yl)sulfonylphenyl]-1-methyl-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-7-one

Other Names / Synonyms: 5-[2-ethoxy-5-(4-methylpiperazin-1-yl)sulfonylphenyl]-1-methyl-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-7-one; 139755-83-2; Aphrodil; Vizarsin; Sildenafilo; Patrex; Sildenafil teva; Sildenafil actavis; Sildenafil ratiopharm; 3M7OB98Y7H

Properties & Characteristics

Appearance: Solid. Molecular formula: C22H30N6O4S. Molecular weight: 474.6 g/mol. Melting point: 189-190 °C. Solubility: 3.5 mg/mL. LogP: 1.5.

Physical Data

PropertyValue
Melting Point189-190 °C
Molecular Weight474.6
Solubility3.5 mg/mL
AppearanceSolid

Uses & Applications

Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.

Safety Information

Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Sildenafil
Formula C22H30N6O4S
CAS Number 139755-83-2
Molecular Weight 474.6
Synonyms 5-[2-ethoxy-5-(4-methylpiperazin-1-yl)sulfonylphenyl]-1-methyl-3-propyl-6H-pyrazolo[4,5-d]pyrimidin-7-one; 139755-83-2; Aphrodil; Vizarsin; Sildenafilo; Patrex; Sildenafil teva; Sildenafil actavis; Sildenafil ratiopharm; 3M7OB98Y7H

Frequently Asked Questions

Sildenafil is a pyrazolo[4,3-d]pyrimidin-7-one having a methyl substituent at the 1-position, a propyl substituent at the 3-position and a 2-ethoxy-5-[(4-methylpiperazin-1-yl)sulfonyl]phenyl group at the 5-position. It has a role as a vasodilator agent and an EC 3.1.4.35 (3',5'-cyclic-GMP phosphodiesterase) inhibitor. It is a member of piperazines, a sulfonamide and a pyrazolopyrimidine.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.