7-Chloro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid CAS 54563-42-7
| CAS No. | 54563-42-7 |
| Molecular Formula | C9H5ClN2O3 |
| Molecular Weight | 224.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 7-Chloro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 224.60 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
7-Chloro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid (CAS 54563-42-7), molecular formula C9H5ClN2O3 and molecular weight 224.60 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.
As a certified reference material (CRM), 7-Chloro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-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 | C9H5ClN2O3 |
| Molecular Weight | 224.60 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.) | 1972 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
- 7-Chloro-4-oxo-1,4-dihydro-1,5-naphthyridine-3-carboxylic acid (CAS 27330-42-3)
- 7-chloro-4-oxo-4H-chromene-3-carboxylic Acid (CAS 77202-50-7)
- 7-Chloro-4-hydroxy-3-nitroquinoline (CAS 5350-50-5)
- 7-Chloro-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxylic acid (CAS 217181-68-5)
- 2-Chloro-3-fluoro-6-picoline (CAS 374633-32-6)
- Tert-butyl 2-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydropyridine-1(2H)-carboxylate (CAS 2304631-40-9)
- 3,4-Cibromobenzophenone (CAS 83699-51-8)
- N-(5-(aminomethyl)-2-methylpyridin-4-yl)-n-methylmethanesulfonamide (CAS 1073160-04-9)
- ethyl 3-amino-5-chloro-pyrazine-2-carboxylate (CAS 1393544-72-3)
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- N-(3-(3-chlorophenoxy)-5-nitrophenyl)-2-(5-methyl-3-nitro-1H-pyrazol-1-yl)acetamide (CAS 321142-91-0)
- 4-(6'-Hydroxy-1',3',4',9a'-tetrahydrospiro[cyclohexane-1,9'-xanthen]-4a'(2'H)-yl)benzene-1,3-diol (CAS 138446-23-8)
- Benzo[d]oxazole-6-carbaldehyde (CAS 865449-97-4)
- Tirzepatide Impurity 58 (CAS CATO-C4X-324058)
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