Capecitabine Impurity 40 CAS 5636-04-4
| CAS No. | 5636-04-4 |
| Molecular Formula | C16H18N4O4 |
| Molecular Weight | 330.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C16H18N4O4, Capecitabine Impurity 40 contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 330.34 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
Capecitabine Impurity 40 (CAS 5636-04-4), molecular formula C16H18N4O4 and molecular weight 330.34 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures Capecitabine Impurity 40 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 | C16H18N4O4 |
| Molecular Weight | 330.34 g/mol |
| Appearance | Pale yellow to 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 4 |
Related Capecitabine Standards
- Capecitabine Impurity 42 (CAS CATO-C4X-102442)
- Capecitabine Impurity 10 (CAS 2230479-30-6)
- Capecitabine EP Impurity C (CAS 161599-46-8)
- Capecitabine Impurity 56 (CAS CATO-C4X-102456)
- Capecitabine Impurity 37 (CAS CATO-C4X-102437)
- Capecitabine Impurity 47 (CAS CATO-C4X-102447)
- Capecitabine Impurity 48 (CAS CATO-C4X-102448)
- Capecitabine Impurity 27 (CAS 13007-50-6)
Recommended Standards
- 6-phenyl-1-(pyridin-4-ylmethyl)-1H-pyrazolo[3,4-b]pyridine-4-carboxylic acid (CAS 869464-83-5)
- Diethyl 1-(4-acetylphenyl)-1H-pyrazole-3,4-dicarboxylate (CAS 853356-11-3)
- 6-Phenyl-1-(pyridin-3-ylmethyl)-1h-pyrazolo[3,4-b]pyridine-4-carboxylic acid (CAS 920627-44-7)
- Ethyl 2,4-dihydroxy-7-methyl-7-phenyl-6,7-dihydro-5H-pyrano[2,3-d]pyrimidine-6-carboxylate (CAS 69310-80-1)
- 3-(2-AMINOETHYL)ANILINE 2HCL (CAS 879666-37-2)
- Ethyl 2-mesityl-2-(methylamino)acetate (CAS 1218428-24-0)
- 2-Amino-N-(3-chloro-4-methoxyphenyl)benzamide (CAS 571150-53-3)
- 2-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)-4-(3-chlorophenyl)-5-methyl-2,4-dihydro-3H-1,2,4-triazol-3-one (CAS 860786-38-5)
- 5,6-Diamino-2-(difluoromethyl)nicotinic acid (CAS 1806868-20-1)
- Ethyl 2-(3-bromo-4-methoxyphenyl)-2-oxoacetate (CAS 1226321-02-3)
- 4-Fluoro-6-methylpyridin-2-ol (CAS 1227508-66-8)
- 2-Amino-N-(2-(4-bromophenyl)propan-2-yl)butanamide (CAS 1218601-56-9)
- 6-(bromomethyl)-5-oxaspiro[2.4]heptan-4-one (CAS 1803608-05-0)
- Semaglutide impurity 249 (CAS CATO-C4X-2226249)
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