Raltitrexed Impurity 43 CAS CATO-C4X-138643
| CAS No. | CATO-C4X-138643 |
| Molecular Formula | C13H19NO4S |
| Molecular Weight | 285.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Raltitrexed Impurity 43 (C13H19NO4S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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, Raltitrexed Impurity 43 (CAS CATO-C4X-138643, C13H19NO4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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 manufactures Raltitrexed Impurity 43 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.
Physical & Chemical Properties
| Molecular Formula | C13H19NO4S |
| Molecular Weight | 285.36 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Raltitrexed Standards
- Raltitrexed Impurity 37 (CAS CATO-C4X-138637)
- Raltitrexed Impurity 49 (CAS CATO-C4X-138649)
- Raltitrexed Impurity 52 (CAS CATO-C4X-138652)
- Raltitrexed Impurity 41 (CAS CATO-C4X-138641)
- Raltitrexed Impurity 42 (CAS CATO-C4X-138642)
- Raltitrexed Impurity 47 (CAS 1309031-82-0)
- Raltitrexed Impurity 48 (CAS CATO-C4X-138648)
- Raltitrexed Impurity 3 (CAS CATO-C4X-13863)
Recommended Standards
- Methylene blue /Methylthioninium Chloride Impurity 37 (CAS CATO-C4X-189637)
- Rabeprazole EP Impurity G (CAS 102804-82-0)
- Sotalol Impurity 8 (CAS CATO-C4X-20928)
- Esomeprazole Impurity 52 (CAS 704910-88-3)
- Tepotinib impurity 25 (CAS CATO-C4X-337425)
- Oseltamivir Impurity 43 (CAS CATO-C4X-172043)
- Dexamethasone impurity 123 (CAS CATO-C4X-1165123)
- 3-(1-Hydroxyethyl)benzene-1-sulfonamide (CAS 210827-01-3)
- 2-(4-{[(tert-butoxy)carbonyl]amino}piperidin-1-yl)acetic acid hydrate (CAS 1803593-59-0)
- N-(2-((6-(1H-Pyrazol-1-yl)pyrimidin-4-yl)amino)ethyl)butane-1-sulfonamide (CAS 1172389-68-2)
- (S)-Methyl 5-methoxy-3,4-dihydro-2H-pyrrole-2-carboxylate (CAS 173142-47-7)
- N-(4-Methyl-1,3-thiazol-2-yl)piperidine-4-carboxamide hydrochloride (CAS 1351643-26-9)
- 2-Bromo-1-(6-chloro-1H-indol-3-yl)ethan-1-one (CAS 1094678-99-5)
- Acetyl Tetrapeptide- 15 (CAS 928007-64-1)
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