Cefditoren Impurity 18 CAS CATO-C4X-135818
| CAS No. | CATO-C4X-135818 |
| Molecular Formula | C19H18N6O5S3 |
| Molecular Weight | 506.58 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C19H18N6O5S3, Cefditoren Impurity 18 contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 506.58 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).
As a process- or degradation-related impurity, Cefditoren Impurity 18 (CAS CATO-C4X-135818, C19H18N6O5S3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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), Cefditoren Impurity 18 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 | C19H18N6O5S3 |
| Molecular Weight | 506.58 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 |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 3 |
Related Cefditoren Standards
- Cefditoren (CAS 104145-95-1)
- Cefditoren Impurity 3 (CAS 145904-68-3)
- Cefditoren Impurity 32 (CAS CATO-C4X-135832)
- Cefditoren Impurity 60 (CAS CATO-C4X-135860)
- Cefditoren-d3 (CAS 2747915-67-7)
- Cefditoren Impurity 31 (CAS CATO-C4X-135831)
- Cefditoren Impurity 62 (CAS CATO-C4X-135862)
- Cefditoren Impurity 51 (CAS CATO-C4X-135851)
Recommended Standards
- TEST (CAS CATO-C3D-5869)
- N-(2-Amino-2-oxoethyl)-9-((2-(dimethylamino)-4-(methylsulfonamido)phenyl)amino)acridine-4-carboxamide (CAS 106521-52-2)
- Ticagrelor Impurity 177 (CAS CATO-C4X-1093177)
- 11-((2-(Quinoline-8-sulfonamido)ethyl)thio)-6,11-dihydrodibenzo[b,e]oxepine-2-carboxylic acid (CAS 123226-84-6)
- Baloxavir Impurity C14 (CAS 2136287-80-2)
- Dobutamine Impurity 43 HCl (CAS CATO-C4X-129843)
- Pimavanserin Impurity 8 (CAS 955997-87-2)
- Ethyl 6-methyl-4-(((2-methylthiazol-4-yl)methyl)thio)-2-oxo-1,2-dihydropyrimidine-5-carboxylate (CAS 1203330-51-1)
- 10-Bromonaphtho[2,1-b]benzofuran (CAS 1256544-20-3)
- (S)-tert-Butyl 3-((6-chloropyridazin-3-yl)oxy)pyrrolidine-1-carboxylate (CAS 1314354-60-3)
- 3-Chloro-2,2-dimethyl-1-(4-(3-phenyl-3H-[1,2,3]triazolo[4,5-d]pyrimidin-7-yl)piperazin-1-yl)propan-1-one (CAS 920177-29-3)
- Metoclopramide impurity 53 (CAS CATO-C4X-141553)
- Ethyl 2-amino-4-cyanopyrimidine-5-carboxylate (CAS 15400-52-9)
- Gastric Inhibitory Polypeptide (6-30) amide (human) (CAS 1139691-72-7)
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