Arbidol Impurity 7 HCl CAS CATO-C4X-11297
| CAS No. | CATO-C4X-11297 |
| Molecular Formula | C20H21BrN2O3S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Arbidol Impurity 7 HCl (C20H21BrN2O3SHCl) is characterized by a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine/bromine 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).
Arbidol Impurity 7 HCl (CAS CATO-C4X-11297) is a certified pharmaceutical impurity reference standard with the molecular formula C20H21BrN2O3SHCl and a molecular weight of 485.82 g/mol.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C20H21BrN2O3S HCl |
| Molecular Weight | 485.82 g/mol |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Arbidol Standards
- Arbidol Impurity 82 (CAS 10588-31-5)
- Arbidol Impurity 25 (CAS 110543-98-1)
- Arbidol Impurity 40 (CAS 1106670-97-6)
- Arbidol Impurity 4 (CAS 1130901-04-0)
- Arbidol Impurity 59 (CAS 1130901-04-0（free base）)
- Arbidol Impurity 8 (CAS 1312943-26-2)
- Arbidol Impurity 50 (CAS 1312943-27-3)
- Arbidol HCl (CAS 131707-23-8)
Recommended Standards
- Atogepant Impurity 10 (CAS CATO-C4X-328510)
- (1S,2R,5S)-Lamivudine Impurity 36 (CAS 147126-72-5)
- Rivaroxaban Impurity 117 (CAS CATO-C4X-1090117)
- 2-amino-5-ethylpyrimidin-4(3H)-one (CAS 28224-63-7)
- 1-(3-Mercaptopropyl)-5-methylpyrimidine-2,4(1H,3H)-dione (CAS 81644-60-2)
- 2-(4-Fluorophenyl)-5-methoxybenzo[b]thiophene-3-carboxylic acid (CAS 1215106-52-7)
- (S)-4,4-difluorobutan-2-amine hydrochloride (CAS 2268043-41-8)
- 2-((3,4-Dihydroisoquinolin-2(1H)-yl)sulfonyl)benzoic acid (CAS 111875-14-0)
- N-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(trifluoromethyl)phenyl)pivalamide (CAS 2390149-57-0)
- Ac-(5-31)Semaglutide (CAS CATO-C4X-2226279)
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