2-(4-tert-Butylphenyl)-6-methylquinoline-4-carboxylic acid CAS 438219-50-2
| CAS No. | 438219-50-2 |
| Molecular Formula | C21H21NO2 |
| Molecular Weight | 319.40 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(4-tert-Butylphenyl)-6-methylquinoline-4-carboxylic acid (CAS 438219-50-2), molecular formula C21H21NO2 and molecular weight 319.40 g/mol, is a CATO reference standard with documented purity and traceability.
2-(4-tert-Butylphenyl)-6-methylquinoline-4-carboxylic acid (C21H21NO2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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 | C21H21NO2 |
| Molecular Weight | 319.40 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Related tert Standards
- 2-(4-Butylphenyl)-6-methylquinoline-4-carboxylic acid (CAS 932841-17-3)
- 2-(4-sec-Butylphenyl)-8-methylquinoline-4-carboxylic acid (CAS 932796-03-7)
- N-(4-Butylphenyl)benzo[b]oxepine-4-carboxamide (CAS 924838-70-0)
- 1-(4-Butylphenyl)-4-(5,5-dimethyl-1,3-dioxan-2-yl)butan-1-one (CAS 898787-25-2)
- Ethyl 8-(4-butylphenyl)-8-oxooctanoate (CAS 951888-78-1)
- N-(4-Butylphenyl)-2-(3,5-dioxothiomorpholino)acetamide (CAS 868215-13-8)
- 1-[(4-tert-Butylphenyl)methyl]-6-phenyl-1,2-dihydropyridin-2-one (CAS 400076-11-1)
- 4-(4-tert-Butylphenyl)-4-oxo-2-(piperidin-1-yl)butanoic acid (CAS 329078-78-6)
Recommended Standards
- 2,2'-((Pyren-1-ylmethyl)azanediyl)bis(ethan-1-ol) (CAS 3712-79-6)
- 2-(4-Methylpiperazin-1-yl)-1-phenyl-1H-indole-3-carbaldehyde (CAS 63925-79-1)
- 2,7-Diphenyl-9H-carbazole (CAS 42448-04-4)
- 2-(4-Isopropylphenyl)-6-methylquinoline-4-carbohydrazide (CAS 438221-46-6)
- [4-(2,4-Difluorophenoxy)-3-nitrophenyl]methanol (CAS 338960-82-0)
- n-(2-Chlorophenyl)tetrahydro-2h-thiopyran-3-amine (CAS 1342160-29-5)
- 1,7,7-Trimethylbicyclo[2.2.1]heptan-2-yl-2-chloroacetate (CAS 856799-04-7)
- 3,5-Dibromo-4-(difluoromethyl)picolinonitrile (CAS 1804445-37-1)
- 3-Bromo-5-propoxyphenol (CAS 1881327-91-8)
- N-(3-allylpyridin-2-yl)pivalamide (CAS 551950-43-7)
- (2-(1H-imidazol-1-yl)-4-methylpyrimidin-5-yl)boronic acid (CAS 2225175-35-7)
- 4-((4-(3-Phenyl-1,2,4-oxadiazol-5-yl)-1H-imidazol-1-yl)methyl)aniline (CAS 1351399-06-8)
- 2-(4,5-Diiodo-1H-imidazol-1-yl)acetamide (CAS 1189749-26-5)
- Endo-Pro36-Tirzepatide (CAS CATO-CPTD788688)
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