N-Nitroso Flucloxacillin Impurity 22 CAS CATO-C4X-164722
| CAS No. | CATO-C4X-164722 |
| Molecular Formula | C19H18ClFN4O7S |
| Molecular Weight | 500.89 g/mol |
| 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.
CATO supplies N-Nitroso Flucloxacillin Impurity 22 (CAS CATO-C4X-164722), a pharmacopoeial impurity reference standard (molecular formula C19H18ClFN4O7S, MW 500.89 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C19H18ClFN4O7S, N-Nitroso Flucloxacillin Impurity 22 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 500.89 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), N-Nitroso Flucloxacillin Impurity 22 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 | C19H18ClFN4O7S |
| Molecular Weight | 500.89 g/mol |
| Purity | >95% |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related N Standards
- N-Nitroso Linagliptin impurity 142 (CAS CATO-C4X-1101142)
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Recommended Standards
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- Ethenesulfinic acid (CAS 4363-39-7)
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- 1-(4-Fluorophenyl)-4-(2-(isochroman-1-yl)ethyl)piperazine dihydrochloride (CAS 170856-41-4)
- tert-Butyl 3-hydroxy-2-oxopyrrolidine-1-carboxylate (CAS 857501-39-4)
- 1-Oxaspiro[4.5]Decan-3-amine hydrochloride (CAS 1185386-16-6)
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Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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