4-[(tert-Butoxycarbonyl)oxy]-2-methylphenol CAS 457634-20-7
| CAS No. | 457634-20-7 |
| Molecular Formula | C12H16O4 |
| Molecular Weight | 224.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-[(tert-Butoxycarbonyl)oxy]-2-methylphenol (CAS 457634-20-7), a certified reference material (molecular formula C12H16O4, MW 224.25 g/mol) for analytical method development and quality control.
Based on its molecular formula C12H16O4, 4-[(tert-Butoxycarbonyl)oxy]-2-methylphenol contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 224.25 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C12H16O4 |
| Molecular Weight | 224.25 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.) | 2025 |
Related tert Standards
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- 3-(Tert-butoxycarbonyl)pyrazine-2-carboxylic acid (CAS 1909324-88-4)
- (1-(Tert-butoxycarbonyl)azetidin-3-yl)trifluoroborate (CAS 1430270-33-9)
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- 5-(tert-Butoxycarbonyl)nicotinic acid (CAS 1017793-26-8)
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Recommended Standards
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- 2-(1-((3,4,5-Trimethoxyphenyl)carbamoyl)piperidin-4-yl)acetic acid (CAS 1142202-68-3)
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