Uridine Impurity 21 CAS CATO-C4X-233421
| CAS No. | CATO-C4X-233421 |
| Molecular Formula | C13H16N2O7 |
| Molecular Weight | 312.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Uridine Impurity 21 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.
CATO supplies Uridine Impurity 21 (CAS CATO-C4X-233421), a pharmacopoeial impurity reference standard (molecular formula C13H16N2O7, MW 312.28 g/mol) used for the identification and quantification of trace impurities in APIs.
Uridine Impurity 21 (C13H16N2O7) 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.
Physical & Chemical Properties
| Molecular Formula | C13H16N2O7 |
| Molecular Weight | 312.28 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| 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 | 2 |
Related Uridine Standards
- Uridine Impurity N1 (CAS 86163-17-9)
- Uridine Impurity 20 (CAS CATO-C4X-233420)
- Uridine Impurity 26 (CAS 303197-29-7)
- Uridine Impurity 6 (CAS CATO-C4X-23346)
- Uridine Impurity 7 (CAS CATO-C4X-23347)
- Uridine Impurity 23 (CAS CATO-C4X-233423)
- Uridine Impurity 24 (CAS CATO-C4X-233424)
- Uridine Impurity 15 (CAS 108274-04-0)
Recommended Standards
- Cabotegravir Impurity 3 (CAS CATO-C4X-28763)
- Bosentan Impurity 8 (CAS 150728-12-4)
- H-Lys(Dnp)-OH (CAS 1094-76-4)
- Folic Acid EP Impurity D (CAS 119-24-4)
- Paclitaxel EP Impurity J (CAS 2757197-26-3)
- Topiroxostat Impurity 40 (CAS 4923-06-2)
- Pazopanib Impurity 25 (CAS 6274-28-8)
- 1-(Dimethyl-1,3-thiazol-5-yl)ethan-1-one hydrochloride (CAS 88323-87-9)
- Diisobutyl Adipate (CAS 141-04-8)
- Cyclophosphamide Impurity 9 (CAS 40277-05-2)
- 5-Oxo-5-(2,3,4,5-tetrafluorophenyl)pentanoic acid (CAS 951891-61-5)
- 4-(Hydroxymethyl)benzaldehyde (CAS 52010-97-6)
- Dapoxetine Impurity 38 (CAS 40856-44-8)
- Fas C- Terminal Tripeptide (CAS 189109-90-8)
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