2-[2-methyl-5-(propan-2-yl)phenoxy]acetic acid CAS 19728-20-2
| CAS No. | 19728-20-2 |
| Molecular Formula | C12H16O3 |
| Molecular Weight | 208.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-[2-methyl-5-(propan-2-yl)phenoxy]acetic acid (CAS 19728-20-2) is a high-purity analytical reference standard with the molecular formula C12H16O3 and a molecular weight of 208.25 g/mol.
2-[2-methyl-5-(propan-2-yl)phenoxy]acetic acid (C12H16O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, 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.
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.
As a certified reference material (CRM), 2-[2-methyl-5-(propan-2-yl)phenoxy]acetic acid 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 | C12H16O3 |
| Molecular Weight | 208.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related methyl Standards
- 2-[3-(propan-2-yl)phenoxy]propanoic acid (CAS 25140-93-6)
- 3-[2-(propan-2-yl)phenoxy]propanoic acid (CAS 844849-89-4)
- 2-(propan-2-yl)-4,5,6,7-tetrahydro-1H-1,3-benzodiazole-6-carboxylic acid (CAS 1004620-22-7)
- 6-[ethyl(propan-2-yl)amino]pyridine-3-carboxylic acid (CAS 1094798-46-5)
- 4-([4-(Propan-2-yl)-4h-1,2,4-triazol-3-yl]methyl)piperidine (CAS 1517340-55-4)
- 1-(Propan-2-yl)-1h-pyrazole-4-sulfonyl chloride (CAS 1177336-51-4)
- 2-(Propan-2-yl)-1h-imidazole-4-sulfonyl chloride (CAS 1334000-30-4)
- 1-(Propan-2-yl)-1H-imidazole-4-sulfonyl chloride (CAS 1338976-16-1)
Recommended Standards
- 3-(4-Hydroxy-2,6-dimethylphenyl)-2-methylpropanoic acid (CAS 194857-85-7)
- (2,4,6-Trimethyl-phenoxy)-acetic acid methyl ester (CAS 86745-91-7)
- (2-tert-Butyl-phenoxy)-acetic acid (CAS 19271-90-0)
- (3aS,6R,7aS)-6-Ethyl-1-oxo-2,3,3a,6,7,7a-hexahydro-1H-indene-4-carboxylic acid (CAS 62251-98-3)
- 3-(4-amino-2-fluorophenoxymethyl)benzonitrile (CAS 1094859-64-9)
- 3-(2-Pyridyl)propionic Acid (CAS 15197-75-8)
- Ononin (CAS 486-62-4)
- Cefminox Impurity 3 (CAS CATO-C4X-19263)
- (2E)-1-(4-Fluorophenyl)-3-(5-methylfuran-2-yl)prop-2-en-1-one (CAS 77869-21-7)
- PSB 1115 (CAS 152529-79-8)
- 2-Chloro-6-isopropoxypyridin-4-amine (CAS 1186111-99-8)
- Rivaroxaban impurity 188 (CAS 1879933-39-7)
- N-(1-Cyano-1-cyclopropylethyl)-2-((1-methyl-1H-imidazol-2-yl)thio)acetamide (CAS 875865-56-8)
- Semaglutide impurity 248 (CAS CATO-C4X-2226248)
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