Flomoxef Impurity 55 CAS CATO-C4X-138255
| CAS No. | CATO-C4X-138255 |
| Molecular Formula | C22H27F4N7O12S3 |
| Molecular Weight | 753.68 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Flomoxef Impurity 55 (CAS CATO-C4X-138255) is a certified pharmaceutical impurity reference standard with the molecular formula C22H27F4N7O12S3 and a molecular weight of 753.68 g/mol.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution, Flomoxef Impurity 55 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 753.68 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C22H27F4N7O12S3 |
| Molecular Weight | 753.68 g/mol |
| Purity | ≥90% |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 7 |
| Sulfur Atoms | 3 |
Related Flomoxef Standards
- Flomoxef Impurity 66 (CAS CATO-C4X-138266)
- Flomoxef Impurity 44 (CAS CATO-C4X-138244)
- Flomoxef Impurity 46 (CAS CATO-C4X-138246)
- Flomoxef Impurity 17 (CAS 949587-46-6)
- Flomoxef Impurity 33 (CAS CATO-C4X-138233)
- Flomoxef Impurity 60 (CAS CATO-C4X-138260)
- Flomoxef Impurity 64 (CAS 2095482-92-9)
- Flomoxef Impurity 2 (CAS 1208982-59-5)
Recommended Standards
- 3,3',3'',4,4',4''-Hexahexyl-2,2':5',2''-terthiophene (CAS CATO-CIM-105981)
- Ceftazidime impurity 117 (CAS CATO-C4X-1212117)
- Rifaximin EP Impurity F (CAS 14487-05-9)
- Ceftazidime impurity 114 (CAS CATO-C4X-1212114)
- Empagliflozin Impurity 23 (CAS 2452301-27-6)
- Itopride Impurity 19 (CAS 15182-92-0)
- Cefoxitin Impurity 38 (CAS CATO-C4X-157838)
- 2-Isopropyl-3H-imidazo[4,5-b]pyridine-5-carboxylic acid (CAS 1352911-84-2)
- (+)-Goniothalesdiol (CAS 204975-45-1)
- 3-4-O-Isopropylidene-D-mannitol (CAS 3969-84-4)
- Dehydro Benidipine (CAS 118935-44-7)
- 5-(((4-Chlorophenyl)sulfonyl)methyl)furan-2-carboxylic acid (CAS 1146297-18-8)
- 4-((4-Benzylpiperidin-1-yl)methyl)-7-methoxy-2H-chromen-2-one hydrochloride (CAS 1177604-42-0)
- Neuropeptide AF (human) (CAS 192387-38-5)
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