Raltitrexed Impurity 19 CAS CATO-C4X-138619
| CAS No. | CATO-C4X-138619 |
| Molecular Formula | C23H26N4O6S |
| Molecular Weight | 486.54 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Raltitrexed Impurity 19 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.
Raltitrexed Impurity 19 (CAS CATO-C4X-138619) is a certified pharmaceutical impurity reference standard with the molecular formula C23H26N4O6S and a molecular weight of 486.54 g/mol.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Raltitrexed Impurity 19 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 486.54 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C23H26N4O6S |
| Molecular Weight | 486.54 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Raltitrexed Standards
- Raltitrexed Impurity 35 (CAS CATO-C4X-138635)
- Raltitrexed Impurity 51 (CAS CATO-C4X-138651)
- Raltitrexed Impurity 31 (CAS CATO-C4X-138631)
- Raltitrexed Impurity 36 (CAS CATO-C4X-138636)
- Raltitrexed Impurity 53 (CAS CATO-C4X-138653)
- Raltitrexed (CAS 112887-68-0)
- Raltitrexed Impurity 4 (CAS 132463-02-6)
- Raltitrexed Impurity 38 (CAS CATO-C4X-138638)
Recommended Standards
- Vonoprazan Impurity 125 (CAS CATO-C4X-1020125)
- Benzhydryl 2-(triphenyl-$l^{5}-phosphanyl)acetate (CAS 61042-29-3)
- Fluticasone Furoate EP Impurity B (CAS 80474-24-4)
- Allisartan Isoproxil Impurity 35 (CAS CATO-C4X-321735)
- Etomidate Impurity 26 (CAS CATO-C4X-188426)
- Methionine Impurity 11 (CAS 33770-86-4)
- Baclofen impurity 7 (CAS 103857-58-5)
- Diethyl 5-cyano-3-methyl-1H-pyrrole-2,4-dicarboxylate (CAS 18711-56-3)
- 2-Amino-2-(3-ethyl-1-methyl-1h-1,2,4-triazol-5-yl)ethan-1-ol (CAS 1339133-63-9)
- 1-Bromo-4-(sec-butyl)benzene (CAS 39220-69-4)
- 3-(4-(Trifluoromethoxy)phenyl)oxetane (CAS 1044507-44-9)
- 3-Methyl-1-(pyrazin-2-yl)butan-1-one (CAS 86461-64-5)
- 4-Chloro-2-(cyanomethyl)benzonitrile (CAS 76520-06-4)
- Angiotensin III Antipeptide (CAS 133605-55-7)
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