Uridine Impurity 4 CAS 198267-18-4
| CAS No. | 198267-18-4 |
| Molecular Formula | C14H20N2O10 |
| Molecular Weight | 376.32 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Uridine Impurity 4 (CAS 198267-18-4), a pharmacopoeial impurity reference standard (molecular formula C14H20N2O10, MW 376.32 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C14H20N2O10, Uridine Impurity 4 contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 376.32 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Uridine Impurity 4 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 | C14H20N2O10 |
| Molecular Weight | 376.32 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2013 |
| Nitrogen Atoms | 2 |
Related Uridine Standards
- Uridine, 2',5'-dideoxy-5'-[[(4-methylphenyl)sulfonyl]amino]- (CAS 864948-91-4)
- Uridine Impurity 13 (CAS 1221169-70-5)
- Uridine Impurity 14 (CAS 872710-80-0)
- Uridine Impurity 15 (CAS 108274-04-0)
- Uridine Impurity 12 (CAS 146426-20-2)
- Uridine Impurity 7 (CAS CATO-C4X-23347)
- Uridine Impurity 6 (CAS CATO-C4X-23346)
- Uridine Impurity 26 (CAS 303197-29-7)
Recommended Standards
- Azacitidine Impurity 87 (CAS CATO-C4X-138887)
- CI Disperse Blue 54 (CAS 20241-76-3)
- Azacitidine Impurity 75 (CAS CATO-C4X-138875)
- 5-Carboxy-fluorescein (CAS 76823-03-5)
- Sugammadex Impurity 26 (CAS CATO-C4X-190626)
- Emedastine Impurity 20 (CAS CATO-C4X-226720)
- Sumatriptan impurity 2 (CAS CATO-C4X-17572)
- Ethyl 4-(2,6-dichloro-5-fluoropyridin-3-yl)-3-oxobutanoate (CAS 905808-04-0)
- 5-Bromo-2-chloro-4-methylpyrimidine (CAS 633328-95-7)
- 5- Amino-3-chloro-1-methylpyridin-2(1H)-one (CAS 1394040-94-8)
- [4-(2-Pyridin-4-ylethyl)phenyl]amine dihydrochloride (CAS 1185296-27-8)
- 4-Cyclobutyl-1H-pyrazol-3-amine (CAS 1707602-39-8)
- 2-Methylthiomorpholine 1,1-dioxide (CAS 148761-51-7)
- Semaglutide impurity 32 (CAS CATO-C4X-222632)
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