3-Hydroxy-2-methyl-3-(p-tolyl)propanoic acid CAS 158664-75-6
| CAS No. | 158664-75-6 |
| Molecular Formula | C11H14O3 |
| Molecular Weight | 194.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 3-Hydroxy-2-methyl-3-(p-tolyl)propanoic acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
3-Hydroxy-2-methyl-3-(p-tolyl)propanoic acid (CAS 158664-75-6), molecular formula C11H14O3 and molecular weight 194.23 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-Hydroxy-2-methyl-3-(p-tolyl)propanoic acid (C11H14O3) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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.) | 2002 |
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
- Methyl p-methoxyhydrocinnamate (CAS 15823-04-8)
- 2-Hydroxy-3-methyl-2-phenylbutanoic acid (CAS 15879-60-4)
- (S)-2,3-Diamino-2-benzylpropanoic acid (CAS 158149-99-6)
- 3-(2,4-Dimethylphenoxy)propanoic acid (CAS 15904-03-7)
- N1,N3,N5-Tri(pyridin-4-yl)benzene-1,3,5-tricarboxamide (CAS 725274-03-3)
- 1-(4-Amino-2-fluorophenyl)-4-methylpiperazin-2-one (CAS 1508804-45-2)
- 2-((1-(Pyridin-2-yl)ethyl)amino)ethan-1-ol (CAS 1038341-14-8)
- 2-Chloro-n-(2-cyanoethyl)-n-methylpropanamide (CAS 1019394-83-2)
- n-(4-Hydroxyphenyl)-4-iodobenzenesulfonamide (CAS 794552-86-6)
- 4'-Bromo-4-fluoro-2-methyl-1,1'-biphenyl (CAS 1443325-28-7)
- 3-iodo-5-methyl-1H-pyrazolo[3,4-c]pyridine (CAS 1386457-82-4)
- Methyl 5-methoxy-3-((4-methylbenzyl)oxy)thiophene-2-carboxylate (CAS 343376-14-7)
- (r)-1-(4-Nitrobenzyl)pyrrolidin-3-amine dihydrochloride (CAS 1286208-71-6)
- Tirzepatide Impurity 38 (CAS CATO-C4X-324038)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com