Silodosin N-Nitroso Impurity 21
Impurity reference standard · Silodosin N-Nitroso
- CAS number
- —
- InChIKey
- HWHCSAHSVUYMKJ-QGZVFWFLSA-N
- Molecular formula
- C25H29F3N4O5
- Molecular weight
- 522.52
- Exact mass
- 522.2090 Da
About Silodosin N-Nitroso Impurity 21
Silodosin N-Nitroso Impurity 21 is a specified impurity of Silodosin N-Nitroso. It has no single publicly registered CAS number, so it is defined by the structure and molecular formula below.
The compound is characterised by its molecular formula C25H29F3N4O5 and a molecular weight of 522.52, with the two-dimensional structure shown above. Because it shares the Silodosin N-Nitroso scaffold, it is typically used to track process-related and degradation impurities of Silodosin N-Nitroso during method development, forced degradation and stability studies.
Computed from the structure, the compound has a monoisotopic mass of 522.2090 Da, a calculated LogP of 4.06, a topological polar surface area of 119.38 Ų. It presents 2 hydrogen-bond donors and 6 acceptors. The structure carries 1 defined stereocentre, which is relevant wherever a stereochemically defined standard is required. These values are commonly used to anticipate chromatographic retention and to plan ionisation conditions during method development.
Each pack ships with a certificate of analysis together with the supporting analytical data — HNMR, MS and HPLC or GC traces — so the material can be released straight into your own QC workflow.
Available from stock in milligram to gram quantities; larger or custom synthesis requirements are quoted on request.
Calculated properties
Derived from the two-dimensional structure above using RDKit. Computed values describe the parent structure and are provided as a reference for method development — they are not measured data.
- LogP (Crippen)
- 4.06
- Topological polar surface area
- 119.38 Ų
- Hydrogen bond donors
- 2
- Hydrogen bond acceptors
- 6
- Rotatable bonds
- 14
- Heavy atoms
- 37
- Rings
- 3
- Defined stereocentres
- 1
- Elemental composition
- C 57.47% · F 10.91% · H 5.59% · N 10.72% · O 15.31%
Frequently asked questions
Does Silodosin N-Nitroso Impurity 21 come with a certificate of analysis?
Yes. Every pack ships with a certificate of analysis plus the supporting analytical data — HNMR, MS and HPLC or GC traces.
How is Silodosin N-Nitroso Impurity 21 uniquely identified?
The InChIKey HWHCSAHSVUYMKJ-QGZVFWFLSA-N identifies the structure unambiguously, so it can be matched against your own registry or a public database.
Is a structure file available for Silodosin N-Nitroso Impurity 21?
Yes. The two-dimensional structure is drawn on this page from the SMILES record, and the SMILES or a molfile can be supplied on request.
What pack sizes are available for Silodosin N-Nitroso Impurity 21?
Standard packs run from milligram to gram quantities and ship from stock. Larger or custom synthesis requirements are quoted on request.
Need this standard, or a related one?
Send the compound name, CAS number or a structure file — we confirm availability, pack size and lead time, usually within one business day.