7,8-Dichloroquinoline-5,6-dione CAS 26276-80-2
| CAS No. | 26276-80-2 |
| Molecular Formula | C9H3Cl2NO2 |
| Molecular Weight | 228.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 7,8-Dichloroquinoline-5,6-dione (CAS 26276-80-2), a certified reference material (molecular formula C9H3Cl2NO2, MW 228.03 g/mol) for analytical method development and quality control.
Based on its molecular formula C9H3Cl2NO2, 7,8-Dichloroquinoline-5,6-dione contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 228.03 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 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.
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.) | 1964 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloroquinoline Standards
- 6,7-dichloroquinoline-5,8-dione (CAS 6541-19-1)
- 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)
- 5,7-Dichloroquinoline-2-carbaldehyde (CAS 904886-45-9)
- 7,8-Dichloroquinoline-2-carbaldehyde (CAS 904369-08-0)
- 3,3-Dichloroquinoline-2,4(1H,3H)-dione (CAS 14944-78-6)
Recommended Standards
- Ethyl 2-Iodopropionate (CAS 31253-08-4)
- 5-Iodotetrahydro-2H-pyran-2-ol (CAS 645413-13-4)
- Ethyl 3-Iodopropionate (CAS 6414-69-3)
- 4-Fluoro-2-iodothiophene (CAS 32431-67-7)
- ethyl[(4-fluorophenyl)(pyridin-3-yl)methyl]amine (CAS 1153741-49-1)
- 2-(((1-(2,2-Difluoroethyl)-1H-pyrazol-4-yl)amino)methyl)phenol hydrochloride (CAS 1856078-88-0)
- (2-(4-Bromophenyl)-6-methylimidazo[1,2-a]pyridin-3-yl)methanamine oxalate (CAS 1208076-90-7)
- (1S,3S,4R)-2-Benzyl-2-azabicyclo[2.2.1]heptane-3-carboxylic acid (CAS 1616459-66-5)
- 5-Aminodihydropyrimidine-2,4(1H,3H)-dione (CAS 17017-92-4)
- 3',4'-Dimethyl-[1,1'-biphenyl]-4-thiol (CAS 1443352-66-6)
- 3-Chloro-6-(5-chlorothiophen-2-yl)pyridazine (CAS 75792-71-1)
- N-(2,2-diethoxyethyl)-4-fluoroaniline (CAS 239085-97-3)
- (S)-1-(2-aminopyridin-3-yl)ethanol (CAS 936718-00-2)
- Insulin Degludec Impurity 8 (CAS CATO-C4X-21578)
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