"In the rigorous world of pharmaceutical manufacturing, controlling the impurity profile is non-negotiable. Sildenafil N-Oxide (CAS 1094598-75-0) is a critical degradation product formed via the oxidation of the sildenafil molecule.
Analysis Item | Specification Standard | Method / Note |
Common Name | Sildenafil N-Oxide | -- |
CAS Number | 1094598-75-0 | -- |
Molecular Formula | C22H30N6O5S | Theoretical |
Assay (Purity) | ≥ 98.0% / ≥ 99.0% | HPLC Verified |
Physical Form | Off-white to Tan Solid/Powder | Visual |
Isotope Labeling | Also available in D3/D8 forms | Specialized R&D |
Technical Data | NMR, MS, HPLC Spectra Provided | Technical Dossier |
"Sildenafil N-Oxide (CAS 1094598-75-0) is categorized as a known impurity in sildenafil-based formulations. For pharmaceutical companies following ICH guidelines, it is mandatory to identify and quantify this substance during Accelerated Stability Studies and final batch release.
QC Reference Material: Used as an external standard for the daily quality control of Sildenafil Citrate bulk drug and finished dosages.
Analytical Sovereignty: Unlike general chemical distributors, we provide First-hand Technical Data. Every batch is verified in our Asia-based Manufacturing Hub with final audit by our UK compliance team.
Looking for the parent API? View our [Sildenafil Citrate] series.
Need the active metabolite? See [N-Desmethyl Sildenafil] (UK-92480).
Q: Why is Sildenafil N-Oxide purity critical for LC-MS analysis?










