(5E)-5-[(2E)-2-(1,6-dimethylquinolin-2(1H)-ylidene)ethylidene]-8-oxo-5,8-dihydroquinolinium CAS 6759-89-3
| CAS No. | 6759-89-3 |
| Molecular Formula | C22H19N2O |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
(5E)-5-[(2E)-2-(1,6-dimethylquinolin-2(1H)-ylidene)ethylidene]-8-oxo-5,8-dihydroquinolinium (CAS 6759-89-3), molecular formula C22H19N2OI and molecular weight 454.31 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C22H19N2OI, (5E)-5-[(2E)-2-(1,6-dimethylquinolin-2(1H)-ylidene)ethylidene]-8-oxo-5,8-dihydroquinolinium contains a steroid core, an amide group, a hydroxyl group, an ether linkage, iodine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 454.31 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C22H19N2O I |
| Molecular Weight | 454.31 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- Piperidin-1-ylmethanol (CAS 2494-10-2)
- 1-(3-Bromobenzoyl)piperidin-4-one (CAS 1016813-74-3)
- 4-(carboxymethyl)oxane-4-carboxylic acid (CAS 90200-35-4)
- 4-((3-(Trifluoromethyl)phenyl)thio)-5,6-dihydro-4H-thieno[2,3-b]thiopyran 7,7-dioxide (CAS 339019-18-0)
- 3-CHloro-6-hydroxy-[1,5]naphthyridine-4-carboxylic acid (CAS 2065250-61-3)
- 4,4'-Dibromo-3,3'-dimethoxy-1,1'-biphenyl (CAS 6161-47-3)
- N-(3-Nitrophenyl)-3-(5-(3-nitrophenyl)furan-2-yl)propanamide (CAS 853329-33-6)
- 4-((3-Methoxyphenoxy)methyl)piperidine hydrochloride (CAS 614731-25-8)
- Sotetsuflavon (CAS 2608-21-1)
- Semaglutide impound 212 (CAS CATO-C4X-2226212)
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