API
AY-0268-002
Sildenafil Citrate
C28H38N6O11S
Confirm availabilityView details ↗
Impurity reference standard material
Sildenafil EP Impurity A
Material overview
Sildenafil EP Impurity A (AY-0268-003) — impurity reference standard material. CAS 1391053-95-4, formula C23H32N6O4S, molecular weight 488.60 g/mol. Request technical documentation and current availability.
Confirm availability
Technical identifiers
- Catalog number
- AY-0268-003
- CAS number
- 1391053-95-4
- Molecular formula
- C23H32N6O4S
- Molecular weight
- 488.60 g/mol
- Category
- Impurity reference standard material
- Chemical name
- 5-[2-ethoxy-5-(4-methylpiperazin-1-yl)sulfonylphenyl]-1-methyl-3-(2-methylpropyl)-6H-pyrazolo[4,3-d]pyrimidin-7-one
- Synonyms
- Sildenafil Related Compound A (USP); 7H-Pyrazolo[4,3-d]pyrimidin-7-one,5-[2-ethoxy-5-[(4-methyl-1-piperazinyl)sulfonyl]phenyl]-1,6-dihydro-1-methyl-3-(2-methylpropyl)
- SMILES
- CCOC1=C(C=C(C=C1)S(=O)(=O)N2CCN(CC2)C)C3=NC4=C(C(=O)N3)N(N=C4CC(C)C)C
- Appearance
- White to Off-White Solid
- Light sensitive
- No
- Hygroscopic
- No
Request this material
Ask about current availability, documentation, or a pack size for your program.
Request a quotationAvailable pack sizes
Contact us for pack options.
Storage
Refrigerator
Similar items
View all related materialsNeed help selecting a material?
Our catalog team can help confirm fit, grade, and availability.