Loxoprofen Impurity 36 CAS 639857-67-3
| CAS No. | 639857-67-3 |
| Molecular Formula | C14H18O |
| Molecular Weight | 202.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Loxoprofen Impurity 36 is closely related to a hydroxyl group, an ether linkage, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Loxoprofen Impurity 36 (CAS 639857-67-3) is a certified pharmaceutical impurity reference standard with the molecular formula C14H18O and a molecular weight of 202.29 g/mol.
Based on its molecular formula C14H18O, Loxoprofen Impurity 36 contains 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 202.29 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
As a certified reference material (CRM), Loxoprofen Impurity 36 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 | C14H18O |
| Molecular Weight | 202.29 g/mol |
| Purity | >90% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | 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.) | 1985 |
Related Loxoprofen Standards
- Loxoprofen Impurity 19 (CAS 80530-55-8)
- Loxoprofen Impurity 60 (CAS 132560-66-8)
- Loxoprofen Impurity 45 (CAS 99807-55-3)
- Loxoprofen Impurity 28 (CAS 1823911-62-1)
- Loxoprofen Impurity 58 (CAS 1551612-94-2)
- Loxoprofen Impurity 59 (CAS 132560-67-9)
- Loxoprofen Impurity 62 (CAS CATO-C4X-148862)
- Loxoprofen Impurity 48 (CAS 80530-54-7)
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