Pentoxifylline impurity 37 CAS CATO-C4X-172837
| CAS No. | CATO-C4X-172837 |
| Molecular Formula | C13H18N4O4 |
| Molecular Weight | 294.31 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Pentoxifylline impurity 37 (CAS CATO-C4X-172837) is a certified pharmaceutical impurity reference standard with the molecular formula C13H18N4O4 and a molecular weight of 294.31 g/mol.
Pentoxifylline impurity 37 (C13H18N4O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures Pentoxifylline impurity 37 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 | C13H18N4O4 |
| Molecular Weight | 294.31 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Pentoxifylline Standards
- Pentoxifylline Impurity 26 (CAS CATO-C4X-172826)
- Pentoxifylline Impurity N4 (CAS 84321-40-4)
- Pentoxifylline Impurity 17 (CAS 1185995-26-9)
- Pentoxifylline Impurity 18 (CAS 1185878-98-1)
- Pentoxifylline D6 (CAS CATO-C4X-172840)
- Pentoxifylline D5 (CAS 1185995-18-9)
- Pentoxifylline Impurity 16 (CAS 6493-06-7)
- Pentoxifylline Impurity 29 (CAS CATO-C4X-172829)
Recommended Standards
- Valsartan Impurity 27 (CAS 253678-97-6)
- Puromycin aminonucleoside (CAS 58-60-6)
- 2-[5-(4-Amino-phenyl)-tetrazol-2-yl]-N-phenyl-acetamide 3485AE 436092-99-8 C15H14N6O (CAS 436092-99-8)
- Phenytoin EP Impurity D (CAS 5157-15-3)
- Carfilzomib Impurity 84 (CAS CATO-C4X-102284)
- Empagliflozin Impurity 132 (CAS 2452301-23-2)
- Simvastatin EP Impurity A-d6 Sodium Salt (CAS 101314-97-0 (unlabelled))
- 5-Cyclobutyloxazol-2-amine (CAS 899421-56-8)
- Ethyl 2-cyclopropyl-6-formylpyrimidine-4-carboxylate (CAS 2812367-03-4)
- 1H-Pyrrolo[3,2-b]pyridine-2,3-dione (CAS 153072-89-0)
- (R)-6-chloro-2-(pyrrolidin-2-yl)-1H-benzo[d]imidazole (CAS 1311254-84-8)
- 2-Chloro-N-cyclopropyl-N-(2-methylbenzyl)acetamide (CAS 1181673-86-8)
- 4-(2-Bromo-4-chloro-3,5-dimethylphenoxy)-piperidine hydrochloride (CAS 1220017-85-5)
- Semaglutide Impurity 10 (CAS CATO-C4X-222610)
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