Fluorouracil Impurity 28 CAS CATO-C4X-164928
| CAS No. | CATO-C4X-164928 |
| Molecular Formula | C6H8N2O3 |
| Molecular Weight | 156.14 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 156.14 g/mol gives Fluorouracil Impurity 28 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Fluorouracil Impurity 28 (CAS CATO-C4X-164928), a pharmacopoeial impurity reference standard (molecular formula C6H8N2O3, MW 156.14 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Fluorouracil Impurity 28 (C6H8N2O3) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 156.14 g/mol, it falls into the medium-molecular-weight range. 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 Fluorouracil Impurity 28 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 | C6H8N2O3 |
| Molecular Weight | 156.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Fluorouracil Standards
- Fluorouracil Impurity 8 (CAS 726207-85-8)
- Fluorouracil EP Impurity F (CAS 56177-80-1)
- Fluorouracil Impurity 23 (CAS CATO-C4X-164923)
- Fluorouracil Impurity 29 (CAS CATO-C4X-164929)
- Fluorouracil Impurity 11 (Mixture of Diastereomers) (CAS 37103-91-6)
- Fluorouracil EP Impurity E (CAS 1820-81-1)
- Fluorouracil Impurity 18 (CAS CATO-C4X-164918)
- Fluorouracil Impurity 26 (CAS 62836-98-0)
Recommended Standards
- Cefazolin Impurity 28 (CAS 26240-90-4)
- Minoxidil Impurity 20 (CAS 128304-92-7)
- Sulfadimethoxine Impurity 19 (CAS CATO-C4X-150419)
- Oseltamivir Impurity 282 (CAS CATO-C4X-1720282)
- Urapidil Impurity 65 (CAS 2468009-96-1)
- Sugammadex sodium Impurity Org198958-2 (CAS 2412953-13-8)
- Methyldopa Impurity 14 (CAS CATO-C4X-169314)
- 3-((5-Nitropyridin-2-yl)amino)tetrahydrothiophene 1,1-dioxide (CAS 939919-01-4)
- Enarodustat Impurity 23 (CAS CATO-C4X-322823)
- 23068-91-9 CTK4F0830 Pentanoic acid,5,5-dimethoxy-, methyl ester (CAS 23068-91-9)
- 5,5'-Dinitro-2H,2'H-3,3'-bi(1,2,4-triazole) (CAS 30003-46-4)
- 4-(3-Propionylthioureido)benzoic acid (CAS 435286-96-7)
- Methyl 4,5,6,7-tetrahydro-1h-indazole-4-carboxylate (CAS 1384706-10-8)
- Allo-Thr7-Tirzepatide (CAS CATO-CPTD788933)
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