Doxapram Impurity 7 CAS 3471-97-4
| CAS No. | 3471-97-4 |
| Molecular Formula | C20H23NO2 |
| Molecular Weight | 309.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Doxapram Impurity 7 (CAS 3471-97-4) is a certified pharmaceutical impurity reference standard with the molecular formula C20H23NO2 and a molecular weight of 309.40 g/mol.
Based on its molecular formula C20H23NO2, Doxapram Impurity 7 contains a steroid 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 309.40 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).
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.
As a certified reference material (CRM), Doxapram Impurity 7 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C20H23NO2 |
| Molecular Weight | 309.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Doxapram Standards
- Doxapram Impurity 21 (CAS 14327-53-8)
- Doxapram Impurity 35 (CAS CATO-C4X-197335)
- Doxapram Impurity 38 (CAS CATO-C4X-197338)
- Doxapram Impurity 8 (CAS CATO-C4X-19738)
- Doxapram Impurity 6 (CAS CATO-C4X-19736)
- Doxapram Impurity 19 (CAS 14563-97-4)
- Doxapram Impurity 23 (CAS CATO-C4X-197323)
- Doxapram EP Impurity A (CAS 3192-64-1)
Recommended Standards
- Proparacaine Impurity 15 (CAS CATO-C4X-202715)
- Indobufen Impurity 43 (CAS CATO-C4X-179243)
- Dienogest EP Impurity G (CAS 86153-38-0)
- Lercanidipine Impurity 55 (CAS CATO-C4X-136455)
- Pimavanserin impurity 62 (CAS CATO-C4X-193862)
- Methylene blue /Methylthioninium Chloride Impurity 34 (CAS CATO-C4X-189634)
- Trazodone EP Impurity I (CAS 32229-98-4)
- (Z)-2-(But-2-en-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane (CAS 91890-00-5)
- Ethyl 4-(2-(2,5-dioxoimidazolidin-1-yl)acetamido)benzoate (CAS 824942-14-5)
- 2-{[(2,4-dichlorophenyl)methyl]sulfanyl}-5,7-dimethyl-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 262858-57-1)
- 4-(5-Bromo-1,3,4-thiadiazol-2-yl)-2,6-dimethylmorpholine (CAS 1339819-53-2)
- 1-(5-Chlorothiophen-2-yl)butan-1-one (CAS 32427-77-3)
- (1-Benzyl-1H-benzo[d]imidazol-2-yl)methanamine dihydrochloride (CAS 20028-34-6)
- Semaglutide impurity 28 (CAS CATO-C4X-222628)
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