Methyl 5,7-dichloro-4-oxo-1,4-dihydroquinoline-2-carboxylate CAS 20843-48-5
| CAS No. | 20843-48-5 |
| Molecular Formula | C11H7Cl2NO3 |
| Molecular Weight | 272.08 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Methyl 5,7-dichloro-4-oxo-1,4-dihydroquinoline-2-carboxylate (CAS 20843-48-5), a certified reference material (molecular formula C11H7Cl2NO3, MW 272.08 g/mol) for analytical method development and quality control.
Based on its molecular formula C11H7Cl2NO3, Methyl 5,7-dichloro-4-oxo-1,4-dihydroquinoline-2-carboxylate 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 272.08 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Methyl 5,7-dichloro-4-oxo-1,4-dihydroquinoline-2-carboxylate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H7Cl2NO3 |
| Molecular Weight | 272.08 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-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 methanol, ethanol, DMSO |
| 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.) | 1962 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Methyl Standards
- Methyl 6,8-dichloro-4-oxo-1,4-dihydroquinoline-2-carboxylate (CAS 1065074-55-6)
- Methyl 5,7-dichloro-4-hydroxyquinoline-2-carboxylate (CAS 130613-19-3)
- Methyl 5,7-dichloro-4-hydroxyquinoline-3-carboxylate (CAS 1820685-13-9)
- 3,4-Dichloro-1-(2-methoxyphenyl)-1H-pyrrole-2,5-dione (CAS 29236-13-3)
- 3,4-Dichloro-1-(4-methoxyphenyl)-1H-pyrrole-2,5-dione (CAS 34379-53-8)
- 6,8-Dichloro-4-hydroxy-2-methylquinoline-3-carboxylic acid (CAS 92146-40-2)
- Methyl 2-(4,7-Dichloro-3-indolyl)-2-oxoacetate (CAS 2097800-61-6)
- 4,5-Dichloro-1-(4-nitrobenzyl)-1H-imidazole (CAS 1081145-80-3)
Recommended Standards
- Methyl 5-(2,6-dichlorophenyl)oxazole-4-carboxylate (CAS 89204-95-5)
- Pyoluteorin (CAS 25683-07-2)
- Methyl 5-(2,4-dichlorophenyl)oxazole-4-carboxylate (CAS 89204-94-4)
- 4-Chloro-1-(4-chlorobenzyl)-3-nitro-1h-pyrazole (CAS 1002243-75-5)
- 2-(3,5-Dichlorophenyl)acetonitrile (CAS 52516-37-7)
- 1H,2H,3H,4H-pyrrolo[2,1-f][1,2,4]triazine-2,4-dione (CAS 918538-04-2)
- (((2R,3S,4R,5R)-5-(6-Amino-2-fluoro-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl)triphosphoric acid (CAS 1492-62-2)
- 4-(2,2,2-Trifluoroethoxy)cyclohexan-1-one (CAS 1138244-29-7)
- Nickel(II) Acetate (CAS 373-02-4)
- Verapamil EP Impurity K (CAS 20850-49-1)
- Staphyloferrin A (CAS 127902-98-1)
- 2-(6-Bromo-4-oxo-3,4-dihydroquinazolin-2-yl)acetonitrile (CAS 179912-34-6)
- N1-Cycloheptyl-N2-(3,5-dimethylphenyl)oxalamide (CAS 864837-48-9)
- RGD-targeted Proapoptotic Peptide trifluoroacetate salt (CAS 2243207-09-0)
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