4-Hydroxy-1-methyl-3-phenylquinolin-2(1H)-one CAS 519-66-4
| CAS No. | 519-66-4 |
| Molecular Formula | C16H13NO2 |
| Molecular Weight | 251.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-Hydroxy-1-methyl-3-phenylquinolin-2(1H)-one (CAS 519-66-4), molecular formula C16H13NO2 and molecular weight 251.28 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Hydroxy-1-methyl-3-phenylquinolin-2(1H)-one (C16H13NO2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 251.28 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C16H13NO2 |
| Molecular Weight | 251.28 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
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Recommended Standards
- 4-Fluoro-N-phenylbenzenesulfonamide (CAS 312-52-7)
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- 4-Ethoxy-3-morpholin-4-ylbenzoic acid (CAS 946691-21-0)
- 4-Hydroxy-7-methyl-3-phenylquinolin-2(1H)-one (CAS 83609-87-4)
- Methyl 1,2,5-thiadiazolidine-2-carboxylate 1,1-dioxide (CAS 503310-57-4)
- 2-Bromo-3-fluoro-4-hydroxybenzoic acid (CAS 1697589-51-7)
- Methyl 2-(3-hydroxyprop-1-yn-1-yl)benzoate (CAS 103606-72-0)
- (S)-2-Amino-N-(1-isopropyl-1h-pyrazol-5-yl)butanamide (CAS 1568021-99-7)
- Phenformin Hydrochloride (CAS 834-28-6)
- 2-Bromo-5-chloro-3-fluoropyridin-4-ol (CAS 1312440-86-0)
- Terbufos-oxon (CAS 56070-14-5)
- 6-Bromo-2-(3-fluorophenyl)pyridazin-3(2h)-one (CAS 1824058-50-5)
- 2-Bromo-1-(1,2,5-trimethyl-1H-indol-3-yl)propan-1-one (CAS 1255147-60-4)
- Des-Pro36-37-Tirzepatide (CAS CATO-CPTD788938)
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