2,6-Dimethoxy-4-methylphenol CAS 6638-05-7
| CAS No. | 6638-05-7 |
| Molecular Formula | C9H12O3 |
| Molecular Weight | 168.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 2,6-Dimethoxy-4-methylphenol (C9H12O3) 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 the polarity and ionization state of its functional groups, 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).
CATO supplies 2,6-Dimethoxy-4-methylphenol (CAS 6638-05-7), a certified reference material (molecular formula C9H12O3, MW 168.19 g/mol) for analytical method development and quality control.
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 | C9H12O3 |
| Molecular Weight | 168.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Dimethoxy Standards
- 2,4-Dimethoxy-5,6-dimethylpyrimidine (CAS 120129-83-1)
- 2,5-Dimethoxy-p-phenylenediamine (CAS 17626-02-7)
- 2,5-dimethoxy-4-methylphenol (CAS 73120-41-9)
- 3,5-Dimethoxy-2-methylphenol (CAS 39828-36-9)
- 3,5-Dimethoxy-4-methylphenol (CAS 22080-97-3)
- Dimethoxy(phenyl)methanol (CAS 72046-50-5)
- 3,6-Dimethoxy-4-pyridazinecarboxaldehyde (CAS 262353-18-4)
- 4,5-Dimethoxy-1,2-benzoquinone (CAS 21086-65-7)
Recommended Standards
- Dibenzofuran (CAS 132-64-9)
- 1,2,3-Trimethoxybenzene (CAS 634-36-6)
- Etrasimod Impurity 33 (CAS 131373-89-2)
- 1,2,4-Trimethoxybenzene (CAS 135-77-3)
- 4-Bromo-2-(2-(pyrrolidin-1-yl)ethoxy)aniline (CAS 1161833-90-4)
- 2-(4-(1,3-Dioxoisoindolin-2-yl)phenoxy)acetonitrile (CAS 449737-26-2)
- 35899-53-7 2-Amino-3-({[5-(6-amino-9H-purin-9-yl)-3,4-dihydroxyoxolan-2-yl]methyl}sulfanyl)propanoic acid (non-preferred name) DTXSID00393782 (CAS 35899-53-7)
- N-Hydroxy-5-(m-tolyl)furan-2-carboximidamide (CAS 777022-50-1)
- Raltegravir-d3 Potassium Salt (CAS 1246816-98-7)
- 4-Bromo-5-nitronaphthalen-2-ol (CAS 2757096-94-7)
- 1-((4-Chlorobenzyl)oxy)-2-phenyl-1H-benzo[d]imidazole (CAS 338786-83-7)
- Indoleacetic Acid-d4 (CAS 76937-77-4)
- 1-(2-Hydroxyethyl)-3-(o-tolyl)thiourea (CAS 52266-56-5)
- β-Asp9-Tirzepatide (CAS CATO-CPTD788931)
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