4-(tert-Butoxy)-2-hydroxybenzoic acid CAS 1243360-65-7
| CAS No. | 1243360-65-7 |
| Molecular Formula | C11H14O4 |
| Molecular Weight | 210.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-(tert-Butoxy)-2-hydroxybenzoic acid (CAS 1243360-65-7) is a high-purity analytical reference standard with the molecular formula C11H14O4 and a molecular weight of 210.23 g/mol.
4-(tert-Butoxy)-2-hydroxybenzoic acid (C11H14O4) 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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H14O4 |
| Molecular Weight | 210.23 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 methanol, ethanol, 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.) | 1990 |
Related tert Standards
- 2-(tert-Butoxy)-6-hydroxybenzoic acid (CAS 1243287-03-7)
- 2-(tert-Butoxy)-3-hydroxybenzoic acid (CAS 1243362-47-1)
- 4-(tert-Butoxy)-3-hydroxybenzoic acid (CAS 1243390-30-8)
- 3-(tert-Butoxy)-2-hydroxybenzoic acid (CAS 1243439-67-9)
- 2-Butoxy-3-methyl-5-nitropyridine (CAS 1881320-87-1)
- 2-Butoxy-5-methyl-3-nitropyridine (CAS 1881331-64-1)
- 2-(tert-Butoxy)-4-hydroxybenzoic acid (CAS 364080-24-0)
- 4-butoxy-2-hydroxybenzoic acid (CAS 29264-27-5)
Recommended Standards
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