2,4,5-Trimethylphenol CAS 496-78-6
| CAS No. | 496-78-6 |
| Molecular Formula | C9H12O |
| Molecular Weight | 136.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2,4,5-Trimethylphenol (CAS 496-78-6), molecular formula C9H12O and molecular weight 136.19 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 2,4,5-Trimethylphenol (C9H12O) is characterized by a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 2,4,5-Trimethylphenol meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C9H12O |
| Molecular Weight | 136.19 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Trimethylphenol Standards
- 2,3,5-Trimethylphenol (CAS 697-82-5)
- 2,3,6-Trimethylphenol (CAS 2416-94-6)
- 2,4,6-Trimethylphenol (CAS 527-60-6)
- 3,4,5-Trimethylphenol (CAS 527-54-8)
- 2,3,4-Trimethylphenol (CAS 526-85-2)
- 2,3,5-Trimethylphenol-d11 (CAS 362049-46-5)
- 2,3,6-Trimethylphenol-d11 (CAS 347841-83-2)
- 2,4,6-Trimethylphenol-d11 (CAS 362049-45-4)
Recommended Standards
- 2,4,5,6-Tetramethylpyrimidine (CAS 22868-80-0)
- 2,4-Diethylpyrimidine (CAS 857990-28-4)
- 2,3-Dimethylphenylhydrazine (CAS 84401-19-4)
- 2,4-Dimethylanisole (CAS 6738-23-4)
- (1-Aminohexyl)phosphonic acid (CAS 63207-60-3)
- (1R)-1-(5-bromo-2-thienyl)ethanamine (CAS 1213195-48-2)
- 3-(3,5-Difluorophenyl)oxetane (CAS 1395282-61-7)
- 2-(Naphthalen-1-yl)-5-oxotetrahydrofuran-3-carboxylic acid (CAS 412012-16-9)
- 4-Methyladamantane-1,4-diol (CAS 165963-57-5)
- 4-Chloro-6-hydrazinyl-2-isobutylpyrimidine (CAS 94415-42-6)
- 3-(3-Methoxyphenyl)-3H-[1,2,3]triazolo[4,5-b]pyridine (CAS 62052-13-5)
- 4-(([1,1'-Biphenyl]-4-ylmethylene)amino)-3-(4-fluorophenyl)-1H-1,2,4-triazole-5(4H)-thione (CAS 573929-61-0)
- S-Metolachlor (CAS 87392-12-9)
- Semaglutide impurity 25 (CAS CATO-C4X-222625)
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