Baloxavir Impurity 125 CAS CATO-C4X-2108125
| CAS No. | CATO-C4X-2108125 |
| Molecular Formula | C18H19NO3 |
| Molecular Weight | 297.35 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 Baloxavir Impurity 125 (CAS CATO-C4X-2108125), a pharmacopoeial impurity reference standard (molecular formula C18H19NO3, MW 297.35 g/mol) used for the identification and quantification of trace impurities in APIs.
Baloxavir Impurity 125 (C18H19NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C18H19NO3 |
| Molecular Weight | 297.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Baloxavir Standards
- Baloxavir Marboxil Impurity 155 (CAS CATO-C4X-2108155)
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- Baloxavir Impurity 65 (CAS CATO-C4X-210865)
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- Baloxavir Impurity 69 (CAS CATO-C4X-210869)
- Baloxavir Impurity 134 (CAS CATO-C4X-2108134)
Recommended Standards
- Tolvaptan Impurity 55 (CAS 1401998-56-8)
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- Phentolamine Impurity 27 (CAS CATO-C4X-224727)
- Landiolol Impurity 39 (CAS CATO-C4X-262139)
- Amoxicillin Impurity 91 (CAS CATO-C4X-114891)
- CAS CATO-C4X-34218 (CAS CATO-C4X-34218)
- Cobicistat impurity 12 (CAS 1051463-40-1)
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- 1-Amino-3-(4-(tert-butyl)phenyl)benzo[4,5]imidazo[1,2-a]pyridine-2,4-dicarbonitrile (CAS 885458-42-4)
- 1-(4-Chloro-2-nitrophenyl)-1H-imidazole (CAS 25373-58-4)
- (R)-2-(1-Amino-ethyl)-benzoic acid hydrochloride (CAS 1391433-88-7)
- 1,1-Dicyclopropyl-N-methylmethanamine oxalate (CAS 2089651-35-2)
- Semaglutide Impurity 122 (CAS CATO-C4X-2226122)
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