Loxoprofen Impurity 104 CAS 56607-18-2
| CAS No. | 56607-18-2 |
| Molecular Formula | C11H13BrO2 |
| Molecular Weight | 257.12 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Loxoprofen Impurity 104 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Loxoprofen Impurity 104 (CAS 56607-18-2) is a certified pharmaceutical impurity reference standard with the molecular formula C11H13BrO2 and a molecular weight of 257.12 g/mol.
Based on its molecular formula C11H13BrO2, Loxoprofen Impurity 104 contains a carboxylic acid group, a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 257.12 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.
Physical & Chemical Properties
| Molecular Formula | C11H13BrO2 |
| Molecular Weight | 257.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Br-containing |
Related Loxoprofen Standards
- Loxoprofen Impurity 151 (CAS 1218987-96-2)
- Loxoprofen Impurity 152 (CAS CATO-C4X-1488152)
- Loxoprofen Impurity 18 (CAS 99807-54-2)
- Loxoprofen Impurity 114 (CAS CATO-C4X-1488114)
- Loxoprofen Impurity 11 (CAS 81762-92-7)
- Loxoprofen impurity 74 (CAS CATO-C4X-148874)
- Loxoprofen Impurity 146 (CAS CATO-C4X-1488146)
- Loxoprofen Impurity 15(Mixture of Diastereomers) (CAS 1091621-62-3)
Recommended Standards
- Isoconazole Impurity 7 (CAS 27523-05-3)
- Isoconazole Impurity 6 (CAS 27523-06-4)
- Isoconazole EP Impurity A ( Miconazole EP Impurity A ) (CAS 24155-42-8)
- 2-(4-(Bromomethyl)phenyl)-2-methylpropanoic acid (CAS 1072443-75-4)
- Tadalafil Impurity 45 (CAS 36060-94-3)
- Vericiguat Impurity 60 (CAS CATO-C4X-289660)
- Somatostatin Impurity 2 (CAS CATO-C4X-23502)
- 1,4-Bis(iodomethyl)-Benzene (CAS 30362-89-1)
- tert-Butyl 3-hydroxy-6-fluoro-2,3-dihydrospiro[indene-1,4'-piperidine]-1'-carboxylate (CAS 1965310-09-1)
- 6-(Methylsulfonyl)-N-(2-morpholinoethyl)benzo[d]thiazol-2-amine (CAS 1207000-39-2)
- (S)-6-(Benzyloxy)-2-nitro-6,7-dihydro-5H-imidazo[2,1-b][1,3]oxazine (CAS 187235-29-6)
- Ethyl 4-(5-formyl-2-furyl)piperazine-1-carboxylate (CAS 1175653-32-3)
- Semaglutide impurity 204 (CAS CATO-C4X-2226204)
- Protein Kinase C (19-36) Peptide (CAS 113731-96-7)
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