Loxoprofen impurity 90 CAS CATO-C4X-148890
| CAS No. | CATO-C4X-148890 |
| Molecular Formula | C25H28O5 |
| Molecular Weight | 408.49 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Loxoprofen impurity 90 (CAS CATO-C4X-148890), a pharmacopoeial impurity reference standard (molecular formula C25H28O5, MW 408.49 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C25H28O5, Loxoprofen impurity 90 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 408.49 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).
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.
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 | C25H28O5 |
| Molecular Weight | 408.49 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Loxoprofen Standards
- Loxoprofen impurity 122 (CAS CATO-C4X-1488122)
- Loxoprofen impurity 128 (CAS CATO-C4X-1488128)
- Loxoprofen Impurity 141 (CAS CATO-C4X-1488141)
- Loxoprofen impurity 92 (CAS CATO-C4X-148892)
- Loxoprofen Impurity 111 (CAS CATO-C4X-1488111)
- Loxoprofen Impurity 144 (CAS CATO-C4X-1488144)
- Loxoprofen Impurity 142 (CAS CATO-C4X-1488142)
- Loxoprofen Impurity 25 (CAS 1091621-63-4)
Recommended Standards
- Indacaterol Impurity 29 (CAS 1446354-19-3)
- Desfluoro Iloperidone (CAS 133454-46-3)
- Terbutaline impurity 96 (CAS CATO-C4X-118396)
- Paliperidone Impurity 42 (CAS 1380413-60-4)
- Propyphenazone EP Impurity B (CAS CATO-C4X-20342)
- Pimavanserin Impurity 35 (CAS 1791227-69-4)
- Paclitaxel EP Impurity L (CAS 92950-39-5)
- 4-(tert-Butyl)-N-ethylbenzohydrazide (CAS 2573850-19-6)
- 4-(((1,2,3,4-Tetrahydronaphthalen-1-yl)amino)methyl)-7,8-dihydrocyclopenta[g]chromen-2(6H)-one (CAS 869469-29-4)
- 2-Amino-1-(tetrahydro-2h-pyran-3-yl)ethan-1-ol (CAS 1272859-67-2)
- 7-Methyl-2,7-diazaspiro[4.4]Nonane-1,3-dione (CAS 1341919-15-0)
- Dodecyl ether (CAS 4542-57-8)
- Methyl 3-Amino-5-iodothiophene-2-carboxylate (CAS 942589-45-9)
- Semaglutide Impurity 121 X Sodium Salt (CAS CATO-C4X-2226121)
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