Doxycycline Impurity 25 CAS CATO-C4X-193125
| CAS No. | CATO-C4X-193125 |
| Molecular Formula | C22H22N2O9 |
| Molecular Weight | 458.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Doxycycline Impurity 25.
As a process- or degradation-related impurity, Doxycycline Impurity 25 (CAS CATO-C4X-193125, C22H22N2O9) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C22H22N2O9, Doxycycline Impurity 25 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 458.42 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 Doxycycline Impurity 25 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 | C22H22N2O9 |
| Molecular Weight | 458.42 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Doxycycline Standards
- Doxycycline Impurity 19 (CAS CATO-C4X-193119)
- Doxycycline Impurity 26 (CAS CATO-C4X-193126)
- Doxycycline EP Impurity E (CAS 79-57-2)
- Doxycycline-13CD3 (CAS 1902958-13-7)
- Doxycycline-13C-d3 (CAS CATO-C4X-193111)
- Doxycycline-d3 (CAS 2747918-45-0)
- Doxycycline-d3 (CAS CATO-C4X-193110)
- Doxycycline EP Impurity A (CAS 3219-99-6)
Recommended Standards
- 11,12-Dimethyl-13-{2-[3-(trifluoromethyl)phenoxy]phenyl}-4,6,10-trioxatricyclo[7.4.0.0^{3,7}]trideca-1(9),2,7-trien-11-ol (CAS 1005047-31-3)
- N-Nitroso 2-acetyl-2-decarbamoyldoxycycline (CAS CATO-C4X-193118)
- (S)-N8-Hydroxy-2-((R)-5-oxopyrrolidine-2-carboxamido)-N1-(3-(trifluoromethyl)phenyl)octanediamide (CAS 1528755-83-0)
- Minocycline Impurity 70 (CAS CATO-C4X-169970)
- Aprepitant Impurity 23 (CAS 287930-75-0)
- Dexmedetomidine Impurity 7 (CAS 86347-12-8)
- Paclitaxel EP Impurity C (CAS 153415-45-3)
- 3-((Tert-butoxycarbonyl)amino)-3-(4-(tert-butyl)phenyl)propanoic acid (CAS 282524-90-7)
- 3-(Propane-1-sulfonamido)benzoic acid (CAS 849409-82-1)
- N-(3-chloro-4-methylphenyl)-2-((4-chlorophenyl)thio)acetamide (CAS 196712-32-0)
- Boc-N-Me-Phe DCHA (CAS 40163-88-0)
- 1-(5-Ethylpyrimidin-2-yl)piperidin-4-ol (CAS 1001397-29-0)
- 1,2-Dimethylhexahydropyridazin-4-ol (CAS 132846-57-2)
- Semaglutide impurity 81 (CAS CATO-C4X-222681)
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