7-Chloro-2-oxo-1,2-dihydroquinoline-4-carboxylic acid CAS 32431-34-8
| CAS No. | 32431-34-8 |
| Molecular Formula | C10H6ClNO3 |
| Molecular Weight | 223.61 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 223.61 g/mol gives 7-Chloro-2-oxo-1,2-dihydroquinoline-4-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
7-Chloro-2-oxo-1,2-dihydroquinoline-4-carboxylic acid (CAS 32431-34-8), molecular formula C10H6ClNO3 and molecular weight 223.61 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 7-Chloro-2-oxo-1,2-dihydroquinoline-4-carboxylic acid (C10H6ClNO3) 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 its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 7-Chloro-2-oxo-1,2-dihydroquinoline-4-carboxylic acid 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 | C10H6ClNO3 |
| Molecular Weight | 223.61 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| 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.) | 1966 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 3-(3-Chloro-phenyl)-isoxazole-5-carboxylic acid (CAS 100517-43-9)
- 6-Chloro-4-hydroxyquinoline-2-carboxylic acid (CAS 10174-72-8)
- 2-(7-Chloro-3-indolyl)-2-oxoacetic Acid (CAS 1026314-25-9)
- 2-(4-Chloro-3-indolyl)-2-oxoacetic Acid (CAS 1154742-55-8)
- 2-Chloro-5-phenyloxazole-4-carboxylic acid (CAS 1240611-25-9)
- 8-Chloro-4-oxo-1,4-dihydroquinoline-2-carboxylic acid (CAS 130063-96-6)
- 7-Chloro-2-oxo-1,2-dihydroquinoline-3-carboxylic acid (CAS 150584-61-5)
- 5-Chloro-2-oxo-1,2-dihydroquinoline-3-carboxylic acid (CAS 1602191-62-7)
Recommended Standards
- 6-Chloro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 53977-19-8)
- 7-chloro-4-oxo-1,4-dihydroquinoline-2-carboxylic acid (CAS 77474-31-8)
- 6-Chloro-4-oxo-1,4-dihydroquinoline-2-carboxylic acid (CAS 24796-59-6)
- 7-Chloro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 57278-46-3)
- 4-Methoxy-|A,|A-dimethyl-1,4-cyclohexadiene-1-methanol-d6 (CAS 1794795-30-4)
- 5-(tert-Butoxy)-3-cyclopropoxypicolinic acid (CAS 1243441-03-3)
- 1-(3,4-Difluorophenyl)-3-(1H-indol-3-yl)urea (CAS 941879-17-0)
- 2,2',3,4,6-Pentabromodiphenyl Ether (CAS 446254-55-3)
- 8-Phenyl-2-(piperazin-1-yl)-4H-chromen-4-one hydrochloride (CAS 2070014-90-1)
- 1-(2-Bromo-6-fluorophenyl)-2-methylpropan-1-one (CAS 693285-70-0)
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- 2-((3-Fluorobenzyl)oxy)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1346708-04-0)
- Resmetirom impurity 82 (CAS CATO-C4X-291282)
- Semaglutide Impurity 9 (CAS CATO-C4X-22269)
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