2-(3,4-Dichlorophenyl)-4-oxo-1,4-dihydroquinoline-6-carboxylic acid CAS 90034-21-2
| CAS No. | 90034-21-2 |
| Molecular Formula | C16H9Cl2NO3 |
| Molecular Weight | 334.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 2-(3,4-Dichlorophenyl)-4-oxo-1,4-dihydroquinoline-6-carboxylic acid (C16H9Cl2NO3) 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
2-(3,4-Dichlorophenyl)-4-oxo-1,4-dihydroquinoline-6-carboxylic acid (CAS 90034-21-2) is a high-purity analytical reference standard with the molecular formula C16H9Cl2NO3 and a molecular weight of 334.15 g/mol.
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), 2-(3,4-Dichlorophenyl)-4-oxo-1,4-dihydroquinoline-6-carboxylic acid 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 | C16H9Cl2NO3 |
| Molecular Weight | 334.15 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 |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichlorophenyl Standards
- 2-(2-(2,4-Dichlorophenyl)-2-oxoethyl)isoindoline-1,3-dione (CAS 65146-53-4)
- 2-(2,4-Dichlorophenyl)-4-oxo-1,4-dihydroquinoline-6-carboxylic acid (CAS 90034-18-7)
- 2-(2,4-Dichlorophenyl)-4-oxo-1,4-dihydroquinoline-8-carboxylic acid (CAS 90034-73-4)
- 2-(2,5-Dichlorophenyl)-4-oxo-1,4-dihydroquinoline-6-carboxylic acid (CAS 90034-23-4)
- 2-(3,4-Dichlorophenyl)-4-oxo-1,4-dihydroquinoline-8-carboxylic acid (CAS 90034-74-5)
- 3-(((3,4-Dichlorophenyl)imino)methyl)-4-hydroxy-2H-chromen-2-one (CAS 364617-51-6)
- N-(3,5-Dichlorophenyl)-4-oxo-4H-chromene-2-carboxamide (CAS 476298-52-9)
- (3,4-Dichlorophenyl)(4-(3-fluorophenyl)-1H-pyrrol-3-yl)methanone (CAS 478031-40-2)
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