Doxofylline Impurity 5 CAS CATO-C4X-15135
| CAS No. | CATO-C4X-15135 |
| Molecular Formula | C11H12N4O4 |
| Molecular Weight | 264.24 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Doxofylline Impurity 5 (CAS CATO-C4X-15135), a pharmacopoeial impurity reference standard (molecular formula C11H12N4O4, MW 264.24 g/mol) used for the identification and quantification of trace impurities in APIs.
Doxofylline Impurity 5 (C11H12N4O4) contains an amino-acid-derived structure, 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Doxofylline Impurity 5 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 | C11H12N4O4 |
| Molecular Weight | 264.24 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 methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Doxofylline Standards
- Doxofylline (CAS 69975-86-6)
- Doxofylline Impurity 14 (CAS 7029-96-1)
- Doxofylline Impurity 3 (CAS 1174289-18-9)
- Doxofylline impurity 45 (CAS 96474-41-8)
- Doxofylline Impurity 30 (CAS 5270-31-5)
- Doxofylline Impurity 19 (CAS 254760-82-2)
- Doxofylline Impurity 6 (CAS 1429636-72-5)
- Doxofylline Impurity 7 (CAS CATO-C4X-15137)
Recommended Standards
- Sulfadiazine lmpurity 4 (CAS CATO-C4X-150414)
- 1-(3,4-Difluorophenyl)-1H-pyrazolo[3,4-d]pyrimidine-4-thiol (CAS 1082530-95-7)
- Topiroxostat Impurity 58 (CAS CATO-C4X-105558)
- 2-[(3,4-Difluorophenyl)sulfonyl]acetic acid ethyl ester (CAS 1094476-62-6)
- Methimazole Impurity 1 (CAS CATO-C4X-20601)
- Epinastine impurity 60 (CAS CATO-C4X-184060)
- Itraconazole Impurity 13 (CAS 308361-47-9)
- n-Methyl-1-(6-(trifluoromethyl)-[1,2,4]triazolo[4,3-a]pyridin-3-yl)methanamine (CAS 1094353-74-8)
- 1-azido-2-bromobenzene (CAS 3302-39-4)
- 6-Methoxybenzo[d][1,3]dioxole-5-carbonitrile (CAS 1427365-61-4)
- 2-((Trifluoromethyl)thio)benzoic acid (CAS 37526-67-3)
- CAS 73522-42-6 (CAS 73522-42-6)
- 2-(Difluoromethyl)-3-fluoro-5-iodopyridine-6-carboxylic acid (CAS 1805293-05-3)
- Peptide Impurity 64 (CAS CATO-CPTD788964)
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