3H-Pyrano[3,2-f]quinolin-3-one CAS 4959-99-3
| CAS No. | 4959-99-3 |
| Molecular Formula | C12H7NO2 |
| Molecular Weight | 197.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 197.19 g/mol gives 3H-Pyrano[3,2-f]quinolin-3-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3H-Pyrano[3,2-f]quinolin-3-one (CAS 4959-99-3), molecular formula C12H7NO2 and molecular weight 197.19 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 3H-Pyrano[3,2-f]quinolin-3-one is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 197.19 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
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 | C12H7NO2 |
| Molecular Weight | 197.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 1 |
Related H Standards
- 2H-Pyrano[3,2-h]quinolin-4(3H)-one (CAS 72791-37-8)
- (2H-Pyrano[3,2-b]pyridin-7-yl)boronic acid (CAS 1073633-67-6)
- 1H-pyrano[3,4-c]pyridin-4-one (CAS 2306262-21-3)
- 1H-pyrano[4,3-c]pyridin-4-one (CAS 2306276-03-7)
- 5H-Pyrano[2,3-d]pyrimidin-7(6H)-one (CAS 5860-43-5)
- 2H-Pyrano[2,3-b]pyridin-3(4H)-one (CAS 1211515-40-0)
- 5H-pyrano[3,4-b]pyridin-6(8H)-one (CAS 5693-69-6)
- 7H-Pyrano[2,3-d]pyrimidin-7-one (CAS 4425-51-8)
Recommended Standards
- 3-Ethyl-4-methyl-1H-pyrrole-2,5-dicarboxylic acid (CAS 89909-58-0)
- 3-Methoxy-1,6-dimethyl-2-oxo-1,2-dihydropyridine-4-carboxylic acid (CAS 956735-84-5)
- 3-Cyanonaphthalene-1-carboxylic acid (CAS 3839-18-7)
- 3-Methyl-4-(4-nitro-1H-pyrazol-1-yl)butan-2-one (CAS 942852-81-5)
- 3-(3-(Benzyloxy)-5-fluorophenyl)-6,8-dioxabicyclo[3.2.1]octan-3-ol (CAS 1427501-42-5)
- 2-Chloro-5-((4-fluorophenoxy)methyl)thiazole (CAS 339018-31-4)
- 6,7-Dichloro-1H-indole-3-carbaldehyde (CAS 1227564-00-2)
- 2-(4-Chlorobut-2-en-1-yl)isoindoline-1,3-dione (CAS 31645-84-8)
- Benzo[b]thiophene-6-carbaldehyde (CAS 6386-80-7)
- (2-(4-Nitrophenoxy)phenyl)methanol (CAS 25562-37-2)
- 4-(Aminomethyl)-2-bromophenol (CAS 63491-88-3)
- 6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,4-tetrahydroisoquinoline (CAS 922718-55-6)
- 2-(3-Chloro-5-(trifluoromethyl)pyridin-2-yl)malonamide (CAS 338396-82-0)
- Acetyl Tripeptide-1 (CAS 350595-76-5)
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