Raltitrexed Impurity 5 CAS 4282-31-9
| CAS No. | 4282-31-9 |
| Molecular Formula | C6H4O4S |
| Molecular Weight | 172.16 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.
As a process- or degradation-related impurity, Raltitrexed Impurity 5 (CAS 4282-31-9, C6H4O4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Raltitrexed Impurity 5 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 172.16 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).
CATO manufactures Raltitrexed Impurity 5 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 | C6H4O4S |
| Molecular Weight | 172.16 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Sulfur Atoms | 1 |
Related Raltitrexed Standards
- Raltitrexed Impurity 6 (CAS 6317-37-9)
- Raltitrexed Impurity 2 (CAS 18731-19-6)
- Raltitrexed Impurity 45 (CAS CATO-C4X-138645)
- Raltitrexed Impurity 44 (CAS CATO-C4X-138644)
- Raltitrexed Impurity 18 (CAS CATO-C4X-138618)
- Raltitrexed Impurity 1 (CAS 1378372-01-0)
- Raltitrexed Impurity 4 (CAS 39978-57-9)
- Raltitrexed Impurity 46 (CAS CATO-C4X-138646)
Recommended Standards
- Cefdinir Impurity 34 (CAS 73150-67-1)
- Prusogliptin impurity 2 (CAS 949153-15-5)
- 3,4-DICARBOXYTHIOPHENE 3,4-THIOPHENEDICARBOXYLIC ACID 4282-29-5 AS06782 Thiophene-3,4-dicarboxylic acid (CAS 4282-29-5)
- 1-(3,5-Difluorophenyl)propan-2-ol (CAS 1021928-08-4)
- Lansoprazole EP Impurity C/USP Impurity B (CAS CATO-C4X-111352)
- Atorvastatin EP Impurity C Calcium Salt (CAS 693793-53-2)
- Alprazolam EP Impurity D (CAS CATO-C4X-146010)
- 2-(Prop-1-en-2-yl)cyclopentan-1-ol (CAS 380600-30-6)
- Ethyl 2-bromo-3-cyano-4-methylbenzoate (CAS 1805020-64-7)
- Carthamidin (CAS 479-54-9)
- N-Acetyl-S-(2-hydroxy-3-propionamide)-L-cysteine Dicyclohexylammonium Salt (CAS 137698-08-9(free acid))
- 1-(1-Ethylpyrrolidin-2-yl)-N-(pyridin-4-ylmethyl)methanamine (CAS 726162-94-3)
- 6-Bromo-2-(4-fluorobenzyl)-9-hydroxy-3,4-dihydro-2H-pyrido[1,2-a]pyrazine-1,8-dione (CAS 895133-42-3)
- (Des-His1,Glu?)-Glucagon (1-29) amide (human, rat, porcine) (CAS 110084-95-2)
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