5-Chloro-2,3-dihydroquinolin-4(1H)-one CAS 21617-16-3
| CAS No. | 21617-16-3 |
| Molecular Formula | C9H8ClNO |
| Molecular Weight | 181.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Chloro-2,3-dihydroquinolin-4(1H)-one (CAS 21617-16-3), a certified reference material (molecular formula C9H8ClNO, MW 181.62 g/mol) for analytical method development and quality control.
Based on its molecular formula C9H8ClNO, 5-Chloro-2,3-dihydroquinolin-4(1H)-one 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 181.62 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.
As a certified reference material (CRM), 5-Chloro-2,3-dihydroquinolin-4(1H)-one 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 | C9H8ClNO |
| Molecular Weight | 181.62 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 5-Chloro-6-methyl-1H-pyrrolo[2,3-b]pyridin-3-amine (CAS 1000340-14-6)
- 4-Chloro-7-methoxy-1H-indole (CAS 1000341-80-9)
- 4-Chloro-5-ethyl-7h-pyrrolo[2,3-d]pyrimidine (CAS 1004992-44-2)
- 4-Chloro-1-ethyl-1H-imidazo[4,5-c]pyridine (CAS 1025509-11-8)
- 6-Chloro-2-ethylbenzoxazole (CAS 1027019-12-0)
- 6-Chloro-1-methyl-1H-indazol-3-amine (CAS 1031927-22-6)
- 4-chloro-1-methyl-1H-1,3-benzodiazol-2-amine (CAS 1037670-19-1)
- 5-Chloro-2,3-dimethylimidazo[4,5-b]pyridine (CAS 1044770-63-9)
Recommended Standards
- 5-Chloro-2,3-dihydroisoquinolin-4(1H)-one (CAS 89097-92-7)
- 5-Chloro-2-methoxybenzyl cyanide (CAS 7048-38-6)
- 5-chloro-1-methyl-2,3-dihydro-1H-indol-2-one (CAS 41192-33-0)
- 5-Chloro-3,4-dihydroquinolin-2(1H)-one (CAS 72995-15-4)
- 2-(Aminomethyl)tetrahydrofuran-3-carboxylic Acid Hydrochloride (CAS 1909319-63-6)
- 4-(4-(3-(Trifluoromethyl)phenyl)thiazol-2-yl)benzoic acid (CAS 321430-15-3)
- 2-(Morpholin-4-ylmethyl)-4-oxo-3,4-dihydroquinazoline-7-carboxylic acid hydrochloride (CAS 1171512-92-7)
- Phenylmethylene bis(dibutylcarbamodithioate) (CAS 10225-04-4)
- 4-(4-Methyl-1H-imidazol-1-yl)benzaldehyde (CAS 127404-21-1)
- N-(4-(Thiophen-2-yl)-2-(2-(thiophen-2-ylmethylene)hydrazineyl)thiazol-5-yl)acetamide (CAS 608494-69-5)
- 2-Fluoro-6-(4-fluorophenyl)pyridine (CAS 180606-14-8)
- (S)-Subasumstat (CAS 1858282-76-4)
- (9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphine) (CAS 161265-03-8)
- Peptide Impurity 26 (CAS 1350456-66-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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