2-Hydroxy-3-isopropyl-6-methylbenzoic acid CAS 548-51-6
| CAS No. | 548-51-6 |
| Molecular Formula | C11H14O3 |
| Molecular Weight | 194.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-Hydroxy-3-isopropyl-6-methylbenzoic acid (CAS 548-51-6) is a high-purity analytical reference standard with the molecular formula C11H14O3 and a molecular weight of 194.23 g/mol.
Based on its molecular formula C11H14O3, 2-Hydroxy-3-isopropyl-6-methylbenzoic acid 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 194.23 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.
Physical & Chemical Properties
| Molecular Formula | C11H14O3 |
| Molecular Weight | 194.23 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°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.) | 1957 |
Related Hydroxy Standards
- 2-Hydroxy-5-phenylpentanoic acid (CAS 104216-93-5)
- Methyl 4-hydroxy-3-propylbenzoate (CAS 105211-78-7)
- Methyl 3-(4-Hydroxy-2-methylphenyl)propanoate (CAS 105731-18-8)
- 2-hydroxy-N-[2-(pyridin-4-yl)ethyl]propanamide (CAS 111960-94-2)
- 5-Hydroxy-5-phenylpentanoic acid (CAS 116805-87-9)
- Methyl 2-hydroxy-3-(2-methylphenyl)propanoate (CAS 1181405-14-0)
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- 3-Hydroxy-N,N-dimethyl-5-(methylamino)benzamide (CAS 1243441-51-1)
Recommended Standards
- 2-hydroxy-2-methyl-4-phenylbutanoic acid (CAS 4374-63-4)
- 2-Hydroxy-4-phenylpentanoic acid (CAS 91971-04-9)
- 2-Hydroxy-2-(4-isopropylphenyl)acetic acid (CAS 4607-63-0)
- 2-Hydroxy-5-isopropyl-3-methoxybenzaldehyde (CAS 886503-89-5)
- (5Z,8Z,11Z,14Z)-Icosa-5,8,11,14-tetraenamide (CAS 85146-53-8)
- Boc-pentafluoro-Phe-OH (CAS 34702-60-8)
- 5-Bromo-2-fluoro-3-(trifluoromethyl)benzonitrile (CAS 2021202-81-1)
- 1-Cyano-3-methylcyclohexane-1-carboxylic acid (CAS 45982-11-4)
- rac N-Methyl Atomoxetine Oxalate (CAS 107688-86-8)
- 4-Methyl-N-(pyridin-3-ylmethyl)pyridin-2-amine (CAS 865075-85-0)
- n-(1-Carbamothioyl-1-methylpropyl)acetamide (CAS 98428-39-8)
- 4-Mercapto-1H-imidazole-5-carboximidhydrazide (CAS 83256-03-5)
- 2,5-Diethoxy-4-(morpholin-4-yl)aniline dihydrochloride (CAS 136334-84-4)
- Bradykinin-Like Neuropeptide (Aplysia californica) (H-1654.0001) (CAS 165174-60-7)
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