4-Chloro-3-nitroquinolin-2(1H)-one CAS 172469-73-7
| CAS No. | 172469-73-7 |
| Molecular Formula | C9H5ClN2O3 |
| Molecular Weight | 224.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Chloro-3-nitroquinolin-2(1H)-one (CAS 172469-73-7), a certified reference material (molecular formula C9H5ClN2O3, MW 224.60 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 4-Chloro-3-nitroquinolin-2(1H)-one 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | 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.) | 2006 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 1-(2-Chloro-6-nitrophenyl)-1H-1,2,4-triazole (CAS 1018053-08-1)
- 6-Chloro-3-nitroquinolin-4-ol (CAS 101861-61-4)
- 8-Chloro-2-oxo-2H-chromene-3-carboxylic acid (CAS 107747-67-1)
- 2-Chloro-7-nitroquinazolin-4-amine (CAS 1107694-81-4)
- [(3-chloro-4-cyanophenyl)carbamoyl]formic acid (CAS 1153559-74-0)
- 2-Chloro-5-nitro-1H-indole-3-carbaldehyde (CAS 117752-76-8)
- 2-Chloro-6-nitroquinazolin-4-amine (CAS 1279870-95-9)
- 2-Chloro-3-nitroquinolin-4-ol (CAS 1314946-36-5)
Recommended Standards
- 7-Nitro-1H-indole-2-carbonyl chloride (CAS 1706430-07-0)
- 5-Chloro-7-nitroquinolin-8-ol (CAS 18472-03-2)
- 8-Chloro-4-oxo-4H-chromene-2-carboxylic Acid (CAS 166538-98-3)
- 7-Chloro-4-oxo-1,4-dihydrocinnoline-3-carboxylic acid (CAS 187231-22-7)
- 4-(2-Fluoro-3-methoxyphenyl)pyridine (CAS 1214333-86-4)
- 2-(Cyclopropylethynyl)phenol (CAS 870010-44-9)
- (E)-1-(4-Methoxyphenyl)-2-phenyldiazene (CAS 21650-49-7)
- 12-methoxy-5-thia-1,3,10,11-tetrazatricyclo[6.4.0.0²⁶]dodeca-2(6),3,7,11-tetraen-9-one (CAS 2730031-07-7)
- (2-Bromo-6-(thiazol-4-yl)pyridin-4-yl)boronic acid (CAS 2225174-71-8)
- Ethyl 6-Amino-2-(trifluoromethyl)pyrimidine-4-carboxylate (CAS 1269294-25-8)
- (S)-Benzyl 2-((S)-1-(2-methoxy-2-oxoacetyl)pyrrolidine-2-carboxamido)-3-phenylpropanoate (CAS 129987-97-9)
- (2R,3R,4S,5R)-2-(2,6-Diamino-9H-purin-9-yl)-5-(hydroxymethyl)-4-(2-methoxyethoxy)tetrahydrofuran-3-ol (CAS 256224-02-9)
- (1-(3-Fluorophenethyl)piperidin-3-yl)methanamine (CAS 883542-80-1)
- Fibrinopeptide A (human) (CAS 25422-31-5)
Why CATO?
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