5,8-Dihydroxy-1,4-dimethylquinolin-2(1H)-one CAS 157463-87-1
| CAS No. | 157463-87-1 |
| Molecular Formula | C11H11NO3 |
| Molecular Weight | 205.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 5,8-Dihydroxy-1,4-dimethylquinolin-2(1H)-one is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 205.21 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.
5,8-Dihydroxy-1,4-dimethylquinolin-2(1H)-one (CAS 157463-87-1), molecular formula C11H11NO3 and molecular weight 205.21 g/mol, is a CATO reference standard with documented purity and traceability.
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.
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 | C11H11NO3 |
| Molecular Weight | 205.21 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Nitrogen Atoms | 1 |
Related Dihydroxy Standards
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Recommended Standards
- 2,3,5-Trimethylpyrazolo[1,5-a]pyrimidine-7-carboxylic acid (CAS 1567052-17-8)
- Methyl 2-((1H-indol-4-yl)oxy)acetate (CAS 157889-30-0)
- Methyl 5-amino-1-methyl-1H-indazole-3-carboxylate (CAS 1566649-43-1)
- Ethyl 6-aminoimidazo[1,2-a]pyridine-2-carboxylate (CAS 158980-21-3)
- 4-(2,5-Dimethylphenoxy)-3-(trifluoromethyl)aniline (CAS 946697-58-1)
- 3-(1-Methyl-1H-1,2,4-triazol-5-yl)piperidine (CAS 1246350-55-9)
- Testosterone Decanoate EP Impurity C (CAS 57525-67-4)
- (4-(Hydroxymethyl)-2-methylphenyl)boronic acid (CAS 166386-66-9)
- 5-Allyl-2-cyclopropylpyrimidine-4,6-diol (CAS 1311275-28-1)
- 4-Chloro-6-propylpyrimidin-2-amine (CAS 139296-65-4)
- 2-(2-Fluoropropan-2-yl)pyrimidin-4-amine (CAS 2673368-98-2)
- 1-(4-Bromophenyl)-3-(pyridin-2-ylthio)pyrrolidine-2,5-dione (CAS 329078-51-5)
- JWH-122 3-Methylnaphthyl Isomer (CAS 1391052-25-7)
- Gastrin Tetrapeptide (CAS 1947-37-1)
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