Travoprost Impurity 21 CAS CATO-C4X-192521
| CAS No. | CATO-C4X-192521 |
| Molecular Formula | C24H33F3O5Si |
| Molecular Weight | 486.60 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a flavonoid core, a hydroxyl group, an ether linkage, fluorine substitution, Travoprost Impurity 21 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 486.60 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Travoprost Impurity 21 (CAS CATO-C4X-192521) is a certified pharmaceutical impurity reference standard with the molecular formula C24H33F3O5Si and a molecular weight of 486.60 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 | C24H33F3O5Si |
| Molecular Weight | 486.60 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
Related Travoprost Standards
- Travoprost Impurity 20 (CAS 1642863-99-7)
- Travoprost Impurity 15 (CAS 208111-99-3)
- Travoprost Impurity 17 (CAS 208114-58-3)
- Travoprost 15-Keto Derivative (CAS 404830-45-1)
- Travoprost Impurity 44 (CAS CATO-C4X-192544)
- Travoprost Impurity 45 (CAS CATO-C4X-192545)
- Travoprost Enantiomer (CAS 340181-93-3)
- Travoprost (CAS 157283-68-6)
Recommended Standards
- Prednisolone 21-Acetate 17-Valerate (CAS 72064-79-0)
- Methylprednisolone Impurity 51 (CAS CATO-C4X-191951)
- Bongkrekic Acid (CAS 11076-19-0)
- Bazedoxifene N-Oxide (CAS 1174289-22-5)
- Dasatinib Impurity 73 (CAS CATO-C4X-160773)
- Ivabradine impurity 60 (CAS CATO-C4X-111960)
- Capecitabine Impurity 41 (CAS CATO-C4X-102441)
- 1172568-89-6 4-Methoxy-3-{[(5-phenyl-1,3,4-oxadiazol-2-yl)thio]methyl}benzaldehyde MFCD03030317 (CAS 1172568-89-6)
- 2-(Trifluoromethyl)-1H-benzimidazole-4-carboxylic acid (CAS 6866-57-5)
- N-Ethylglycine (CAS 627-01-0)
- HO-PEG17-OH (CAS 351342-04-6)
- 3-[3-(4-chlorophenyl)-4-formyl-1h-pyrazol-1-yl]propanenitrile (CAS 255710-84-0)
- 5-(2-Ethoxyethyl)-6-hydroxy-2-(methylthio)pyrimidin-4(3H)-one (CAS 6964-71-2)
- Semaglutide impurity 87 (CAS CATO-C4X-222687)
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