6,7-dichloroquinoline-5,8-dione CAS 6541-19-1
| CAS No. | 6541-19-1 |
| Molecular Formula | C9H3Cl2NO2 |
| Molecular Weight | 228.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 6,7-dichloroquinoline-5,8-dione (C9H3Cl2NO2) 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. 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).
6,7-dichloroquinoline-5,8-dione (CAS 6541-19-1), molecular formula C9H3Cl2NO2 and molecular weight 228.03 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C9H3Cl2NO2 |
| Molecular Weight | 228.03 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 tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; 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.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related dichloroquinoline Standards
- 7,8-Dichloroquinoline-5,6-dione (CAS 26276-80-2)
- 2,5-Dichloroquinoline-3-carbaldehyde (CAS 1064137-50-3)
- 2,8-Dichloroquinoline-3-carbaldehyde, 97% (CAS 144918-96-7)
- 2,4-Dichloroquinoline-3-carbaldehyde (CAS 151387-00-7)
- 2,7-Dichloroquinoline-3-carbaldehyde (CAS 73568-33-9)
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- 3,3-Dichloroquinoline-2,4(1H,3H)-dione (CAS 14944-78-6)
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- 4-Chlorobutyryl Chloride (CAS 4635-59-0)
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- Methyl 4-(2,3,4-trimethoxyphenyl)-4,5,6,7-tetrahydro-3H-imidazo[4,5-c]pyridine-6-carboxylate hydrochloride (CAS 1094447-97-8)
- N-(5-(Propylthio)-1,3,4-thiadiazol-2-yl)thiophene-2-carboxamide (CAS 393572-16-2)
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