Impurities
AY-0268-003
Sildenafil EP Impurity A
C23H32N6O4S
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Active ingredient reference standard
Sildenafil
Material overview
Sildenafil (AY-0268-001) — active ingredient reference standard. CAS 139755-83-2, formula C22H30N6O4S, molecular weight 474.58 g/mol. Request technical documentation and current availability.
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Technical identifiers
- Catalog number
- AY-0268-001
- CAS number
- 139755-83-2
- Molecular formula
- C22H30N6O4S
- Molecular weight
- 474.58 g/mol
- Category
- Active ingredient reference standard
- Chemical name
- 1-[4-ethoxy-3-(6,7-dihydro-1-methyl-7-oxo-3-propyl-1H-pyrazolo[4,3-d]pyrimidin-5-yl)phenylsulfonyl]-4-methylpiperazine
- 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
- SMILES
- O=C1NC(C2=C(OCC)C=CC(S(N3CCN(C)CC3)(=O)=O)=C2)=NC(C(CCC)=N4)=C1N4C
- Appearance
- White Solid
- Light sensitive
- No
- Hygroscopic
- No
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Storage
Refrigerator
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