Silodosin Impurity N99 CAS 885340-11-4
| CAS No. | 885340-11-4 |
| Molecular Formula | C32H34F3N3O4 |
| Molecular Weight | 581.63 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO supplies Silodosin Impurity N99 (CAS 885340-11-4), a pharmacopoeial impurity reference standard (molecular formula C32H34F3N3O4, MW 581.63 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Silodosin Impurity N99 (C32H34F3N3O4) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
As a certified reference material (CRM), Silodosin Impurity N99 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C32H34F3N3O4 |
| Molecular Weight | 581.63 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Silodosin Standards
- Silodosin impurity 22 (CAS CATO-C4X-175422)
- Silodosin impurity 19 (CAS CATO-C4X-175419)
- Silodosin N-Oxide (CAS 2361272-05-9)
- Silodosin N-Nitroso Impurity 21 (CAS CATO-C4X-175421)
- Silodosin Carboxylic Acid Impurity (CAS 1357252-79-9)
- Silodosin Impurity 18 (CAS 1384966-05-5)
- Silodosin Impurity 20 (CAS CATO-C4X-175420)
- Silodosin impurity 24 (CAS CATO-C4X-175424)
Recommended Standards
- Suc-Val-Pro-Phe-pNA (CAS 95192-11-3)
- Topiramate Impurity 3 (CAS CATO-C4X-17683)
- Aztreonam Impurity 51 (CAS CATO-C4X-152251)
- Fluorescein-PEG3-amine (CAS 1807539-04-3)
- Netupitant Impurity 30 (CAS CATO-C4X-122330)
- Relebactam Impurity 93 (CAS 2650115-54-9)
- Pitolisant impurity 25 (CAS 2307451-04-1)
- BIS(DICHLOROSILYL)METHANE (CAS 18081-42-0)
- Poly(oxy-1,2-ethanediyl), .alpha.-(1-oxododecyl)-.omega.-[[(9Z)-1-oxo-9-octadecen-1-yl]oxy]- (CAS 58258-44-9)
- 2-((Dimethylamino)methyl)benzoic acid hydrochloride (CAS 90279-38-2)
- (S)-1-(2-bromo-3-methylphenyl)ethan-1-amine (CAS 1213179-34-0)
- N-(4-Bromophenyl)-2,3-dihydrobenzo[b][1,4]dioxine-2-carboxamide (CAS 446856-99-1)
- (Z)-[(4-Chlorophenyl)methyl][(4-nitrophenyl)methylidene]oxidoazanium (CAS 939888-34-3)
- Fibrinogen Related Peptide (CAS 80755-86-8)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com