Loxoprofen Impurity 24 CAS 371753-20-7
| CAS No. | 371753-20-7 |
| Molecular Formula | 2*C15H20O3 |
| Molecular Weight | N/A |
| 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.
Loxoprofen Impurity 24 (CAS 371753-20-7) is a certified pharmaceutical impurity reference standard with the molecular formula C15H20O3 and a molecular weight of 248.32 g/mol.
Based on its molecular formula C15H20O3, Loxoprofen Impurity 24 contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 248.32 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).
As a certified reference material (CRM), Loxoprofen Impurity 24 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | 2*C15H20O3 |
| Molecular Weight | 248.32 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
Related Loxoprofen Standards
- m-Loxoprofen (CAS 1026471-88-4)
- o-Loxoprofen (Mixture of Diastereomers) (CAS 1027400-34-5)
- Loxoprofen Impurity 70 (CAS 1027957-36-3)
- Loxoprofen Impurity 57 (CAS 10386-81-9)
- Loxoprofen Impurity 51 (CAS 10472-24-9)
- Loxoprofen Impurity 3 (CAS 1091621-61-2)
- Loxoprofen Impurity 15(Mixture of Diastereomers) (CAS 1091621-62-3)
- Loxoprofen Impurity 25 (CAS 1091621-63-4)
Recommended Standards
- Fudosteine Impurity 28 (CAS CATO-C4X-144728)
- Doxofylline Impurity 9 (CAS CATO-C4X-15139)
- Metoprolol Impurity 18 (CAS 56718-70-8)
- Rabdoserrin A (CAS 96685-01-7)
- (4S,4′S)-2,2′-Propylidenebis[4,5-dihydro-4-phenyloxazole] (CAS 1000614-48-1)
- 2,5-Diamino-2-methylpentanoic acid (CAS 712258-42-9)
- 2-Chloro-7-fluoro-8-methoxyquinoline (CAS 928627-10-5)
- MEthyl 3-amino-1-(2-methoxy-2-oxoethyl)-1h-1,2,4-triazole-5-carboxylate hydrochloride (CAS 2109189-03-7)
- Tert-butyl (1R,5R)-10-bromo-8-oxo-1,5,6,8-tetrahydro-2H-1,5-methanopyrido[1,2-a][1,5]diazocine-3(4H)-carboxylate (CAS 1541115-39-2)
- Semaglutide impurity 39 (CAS CATO-C4X-222639)
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