2-Hydroxy-2-(2,4,5-trimethylphenyl)acetic acid CAS 79068-65-8
| CAS No. | 79068-65-8 |
| Molecular Formula | C11H14O3 |
| Molecular Weight | 194.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 2-Hydroxy-2-(2,4,5-trimethylphenyl)acetic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 194.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
2-Hydroxy-2-(2,4,5-trimethylphenyl)acetic acid (CAS 79068-65-8), molecular formula C11H14O3 and molecular weight 194.23 g/mol, is a CATO reference standard with documented purity and traceability.
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 | 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.) | 1979 |
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)
- Methyl 2-hydroxy-3-(m-tolyl)propanoate (CAS 1181632-40-5)
- 3-Hydroxy-N,N-dimethyl-5-(methylamino)benzamide (CAS 1243441-51-1)
Recommended Standards
- 2-Ethyl-4-hydroxybenzoic Acid ethyl ester (CAS 851334-79-7)
- 2-Hydroxy-2-(4-isopropylphenyl)acetic acid (CAS 4607-63-0)
- 2-Ethyl-4,5,6,7-tetrahydro-2H-indazole-3-carboxylic acid (CAS 32275-62-0)
- 2-hydroxy-2-methyl-4-phenylbutanoic acid (CAS 4374-63-4)
- L-Thiocitrulline (CAS 156719-37-8)
- Ethyl 2-((2-methyl-5-nitrobenzyl)thio)-1H-benzo[d]imidazole-1-carboxylate (CAS 845879-36-9)
- 1-{(2R,3S)-4-[(4-Chloro-1,1,2,2,3,3,4,4-octafluorobutyl)sulfonyl]-5-methyl-3-phenyl-2,3-dihydro-2-furanyl}ethanone (CAS 771491-68-0)
- 6-Fluoro-5-methylpyridin-2-amine (CAS 1393562-73-6)
- 2-Ethynyl-1,3-difluoro-4-nitrobenzene (CAS 2229517-52-4)
- 6-Methyl-2-(methylthio)-5-propylpyrimidin-4(1H)-one (CAS 59144-22-8)
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