Loxoprofen impurity 98 CAS CATO-C4X-148898
| CAS No. | CATO-C4X-148898 |
| Molecular Formula | C18H24O5 |
| Molecular Weight | 320.38 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.
As a process- or degradation-related impurity, Loxoprofen impurity 98 (CAS CATO-C4X-148898, C18H24O5) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C18H24O5, Loxoprofen impurity 98 contains a flavonoid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 320.38 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C18H24O5 |
| Molecular Weight | 320.38 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, 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 |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Loxoprofen Standards
- Loxoprofen Impurity 137 (CAS CATO-C4X-1488137)
- Loxoprofen Impurity 138 (CAS CATO-C4X-1488138)
- Loxoprofen Impurity 139 (CAS CATO-C4X-1488139)
- Loxoprofen Impurity 167 (CAS CATO-C4X-1488167)
- Loxoprofen Impurity 168 (CAS CATO-C4X-1488168)
- Loxoprofen Impurity 40 (CAS CATO-C4X-148840)
- Loxoprofen Impurity 42 (CAS CATO-C4X-148842)
- Loxoprofen impurity 86 (CAS CATO-C4X-148886)
Recommended Standards
- Loxoprofen impurity 87 (CAS CATO-C4X-148887)
- Loxoprofen impurity 99 (CAS 221017-01-2)
- Raloxifene Impurity 20 (CAS 182133-38-6)
- Raloxifene Impurity 24 (CAS CATO-C4X-174324)
- Formoterol EP Impurity H (Trifluoroacetic Acid,Enantiomer Mixture) (CAS CATO-C4X-152537)
- Tunodafil Impurity 12 (CAS CATO-C4X-311012)
- Aztreonam Impurity 20 (CAS CATO-C4X-152220)
- 1-Chloro-2,5-difluoro-4-(trifluoromethyl)benzene (CAS 1099597-35-9)
- 4-Acetyl-3-methyl-1H-pyrrole-2-carbonitrile (CAS 112381-10-9)
- N-(3-Oxo-2,3,6,7-tetrahydro-1H,5H-pyrido[3,2,1-ij]quinolin-9-yl)methanesulfonamide (CAS 903339-57-1)
- 3-{1-[(tert-butoxy)carbonyl]piperidin-4-yl}-1-methyl-1H-pyrazole-5-carboxylic acid (CAS 2059993-63-2)
- 3-Bromopyridine N-Oxide (CAS 2402-97-3)
- 2-Phenyl-4-pentyn-2-ol (CAS 6712-35-2)
- Acetyl Tetrapeptide-11 (CAS 928006-88-6)
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