Linezolid Impurity 16 CAS CATO-C4X-107316
| CAS No. | CATO-C4X-107316 |
| Molecular Formula | C21H29FN4O6 |
| Molecular Weight | 452.48 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.
CATO supplies Linezolid Impurity 16 (CAS CATO-C4X-107316), a pharmacopoeial impurity reference standard (molecular formula C21H29FN4O6, MW 452.48 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C21H29FN4O6, Linezolid Impurity 16 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 452.48 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).
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 | C21H29FN4O6 |
| Molecular Weight | 452.48 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Linezolid Standards
- Linezolid Impurity 94 (CAS CATO-C4X-107394)
- Linezolid Impurity 24 (CAS CATO-C4X-107324)
- Linezolid Impurity 73 (CAS CATO-C4X-107373)
- Linezolid Impurity 93 (CAS CATO-C4X-107393)
- Linezolid Impurity 26 (CAS 168828-89-5)
- Linezolid Impurity 68 (CAS 947736-16-5)
- Linezolid Impurity 31 (CAS CATO-C4X-107331)
- Linezolid Impurity 27 (CAS CATO-C4X-107327)
Recommended Standards
- Ethyl 5-(4-acetoxyphenyl)-2-(furan-2-ylmethylene)-7-methyl-3-oxo-3,5-dihydro-2H-thiazolo[3,2-a]pyrimidine-6-carboxylate (CAS 313966-49-3)
- 1-Amino-4-((5-((2-hydroxyethyl)sulfonyl)-2-methoxyphenyl)amino)anthracene-9,10-dione (CAS 79641-29-5)
- Tazobactam Impurity 12 (CAS CATO-C4X-120512)
- 1-((4-Nitrophenyl)amino)-5-(phenylthio)anthracene-9,10-dione (CAS 66012-15-5)
- Timolol EP Impurity E Maleate (CAS CATO-C4X-149610)
- Momelotinib impurity 10 (CAS CATO-C4X-337710)
- Esmolol Impurity 42 (CAS CATO-C4X-189142)
- 5,7-Dihydroxyimidazo[1,2-α]pyrimidine (CAS 51647-90-6)
- 2-(2,5-Dimethylphenyl)imidazo[1,2-a]pyridine (CAS 881040-60-4)
- Butyl hydrogen carbonate (CAS 10411-26-4)
- alpha-[4-(Difluoromethoxy)phenyl]benzeneethanamine (CAS 1184261-49-1)
- 4,4,5,5-Tetramethyl-2-(2-((propylthio)methyl)phenyl)-1,3,2-dioxaborolane (CAS 2377611-91-9)
- (1R,3S,5R)-2-Azabicyclo[3.1.0]hexane-3-carboxamide hydrochloride (CAS 1867272-80-7)
- Palmitoyl Tripeptide-1 TFA salt (CAS 2803375-47-3)
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