Capecitabine Impurity 13 CAS CATO-C4X-102413
| CAS No. | CATO-C4X-102413 |
| Molecular Formula | C19H26FN3O8 |
| Molecular Weight | 443.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Capecitabine Impurity 13 (CAS CATO-C4X-102413), a pharmacopoeial impurity reference standard (molecular formula C19H26FN3O8, MW 443.42 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Capecitabine Impurity 13 (C19H26FN3O8) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 443.42 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C19H26FN3O8 |
| Molecular Weight | 443.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
Related Capecitabine Standards
- Capecitabine Impurity 45 (CAS 162204-22-0)
- Capecitabine Impurity 46 (CAS 1341231-51-3)
- Capecitabine EP Impurity G (CAS 162204-20-8)
- Capecitabine Impurity 39 (CAS CATO-C4X-102439)
- Capecitabine Impurity 22 (CAS CATO-C4X-102422)
- Capecitabine Impurity 17 (CAS 1262133-68-5)
- Capecitabine Impurity 24 (CAS CATO-C4X-102424)
- Capecitabine Impurity 8 (CAS 1262133-66-3)
Recommended Standards
- 2,3-Dimethoxy-11-(4-(trifluoromethyl)phenyl)-5,11,12,12a-tetrahydropyrazolo[3',4':4,5]pyrido[2,1-a]isoquinolin-8(6H)-one (CAS 685108-22-9)
- 2,3-Dimethoxy-11-(3-(trifluoromethyl)phenyl)-5,11,12,12a-tetrahydropyrazolo[3',4':4,5]pyrido[2,1-a]isoquinolin-8(6H)-one (CAS 685107-27-1)
- 1-(2-(Dimethylamino)ethyl)-4-(3-fluoro-4-methoxybenzoyl)-3-hydroxy-5-(4-nitrophenyl)-1H-pyrrol-2(5H)-one (CAS 618074-79-6)
- 1-(2-(Dimethylamino)ethyl)-4-(3-fluoro-4-methoxybenzoyl)-3-hydroxy-5-(3-nitrophenyl)-1H-pyrrol-2(5H)-one (CAS 618074-81-0)
- (Z)-Ceftizoxime Impurity 18 (CAS CATO-C4X-179318)
- Lacidipine Impurity 10 (CAS CATO-C4X-167110)
- Glycine Impurity 6 (CAS CATO-C4X-33366)
- tert-Butyl (1R*,4R*)-4-isobutyramidocyclohexylcarbamate (CAS 1286275-29-3)
- 4-(3-Methyl-3-pyrrolidinyl)morpholine (CAS 1699155-88-8)
- Benzyl (6-amino-6-oxohexyl)carbamate (CAS 53299-81-3)
- 4-Fluoro-N-(2-morpholinophenyl)benzamide (CAS 303151-31-7)
- 3-((Thiophen-3-ylmethyl)amino)benzamide (CAS 1042602-29-8)
- Ethyl 2-(3-methylthiophen-2-yl)acetate (CAS 154203-99-3)
- Palmitoyl Tripeptide-1 HCl (CAS 2757690-14-3)
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