6,9-Dichloro-2,3-dihydro-4H-1-oxa-3a,5,8-triazaphenalen-4-one CAS 2883421-75-6
| CAS No. | 2883421-75-6 |
| Molecular Formula | C9H5Cl2N3O2 |
| Molecular Weight | 258.06 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 258.06 g/mol gives 6,9-Dichloro-2,3-dihydro-4H-1-oxa-3a,5,8-triazaphenalen-4-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
6,9-Dichloro-2,3-dihydro-4H-1-oxa-3a,5,8-triazaphenalen-4-one (CAS 2883421-75-6) is a high-purity analytical reference standard with the molecular formula C9H5Cl2N3O2 and a molecular weight of 258.06 g/mol.
The molecular framework of 6,9-Dichloro-2,3-dihydro-4H-1-oxa-3a,5,8-triazaphenalen-4-one (C9H5Cl2N3O2) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 6,9-Dichloro-2,3-dihydro-4H-1-oxa-3a,5,8-triazaphenalen-4-one 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 | C9H5Cl2N3O2 |
| Molecular Weight | 258.06 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2004 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Dichloro Standards
- 6,8-Dichloro-2-oxo-2H-chromene-3-carboxamide (CAS 101166-95-4)
- 6,8-Dichloro-4-oxo-1,4-dihydroquinoline-2-carboxylic acid (CAS 134785-79-8)
- 4-(4,6-Dichloro-1,3,5-triazin-2-yl)benzene-1,3-diol (CAS 150238-76-9)
- 2-(4,7-Dichloro-3-indolyl)-2-oxoacetic Acid (CAS 1514155-85-1)
- 5,7-Dichloro-4-hydroxyquinoline-3-carboxylic acid (CAS 171850-30-9)
- 4,5-Dichloro-1-(4-nitrophenyl)-1H-imidazole (CAS 649579-09-9)
- 5,8-Dichloro-4-hydroxyquinoline-3-carboxylic acid (CAS 35973-26-3)
- 6,7-Dichloro-4-hydroxyquinoline-3-carboxylic acid (CAS 26893-20-9)
Recommended Standards
- 6,8-Dichloro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 35973-27-4)
- 6-Iodo-2-methylimidazo[1,2-a]pyridine (CAS 860722-41-4)
- 6,8-Dichloro-2-hydroxyquinoline-4-carboxylic acid (CAS 50504-24-0)
- 6-Iodo-4-methyl-1H-indazole (CAS 885521-18-6)
- Ethyl 1-(5-((3-fluorophenyl)carbamoyl)-1,3,4-thiadiazole-2-carbonyl)piperidine-4-carboxylate (CAS 1142210-66-9)
- 4-Bromo-5-chloro-2-methylbenzaldehyde (CAS 1394291-50-9)
- 4-[(4,6-Dichloro-2-pyrimidinyl)amino]benzonitrile-13C3 (CAS 1246818-77-8)
- Boc-Arg-OEt HCl (CAS 2381754-34-1(free base))
- Rizatriptan EP Impurity B Chloride (CAS CATO-C4X-17528)
- 4-Bromo-6-chloro-3-iodo-1H-pyrrolo[2,3-b]pyridine (CAS 1000340-78-2)
- Ethyl 4-Chloro-2-(trifluoromethyl)pyrimidine-5-carboxylate (CAS 720-01-4)
- 1-(2-fluoro-5-methylphenyl)-1H,4H,5H,6H-cyclopenta[c]pyrazole-3-carboxylic acid (CAS 1038738-52-1)
- Linezolid Impurity 63 (CAS 348626-43-7)
- Liraglutide Impurity 21 TFA Salt (CAS CATO-C4X-199221)
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