5-Ethoxy-2-methylphenol CAS 90534-24-0
| CAS No. | 90534-24-0 |
| Molecular Formula | C9H12O2 |
| Molecular Weight | 152.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 152.19 g/mol gives 5-Ethoxy-2-methylphenol distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-Ethoxy-2-methylphenol (CAS 90534-24-0), molecular formula C9H12O2 and molecular weight 152.19 g/mol, is a CATO reference standard with documented purity and traceability.
5-Ethoxy-2-methylphenol (C9H12O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C9H12O2 |
| Molecular Weight | 152.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
Related Ethoxy Standards
- 4-Ethoxy-3-methylphenol (CAS 1216257-46-3)
- 6-Ethoxy-2-methylpyridin-3-amine (CAS 1226903-84-9)
- 6-Ethoxy-5-methylpyridin-3-amine (CAS 1249781-69-8)
- 2-Ethoxy-4-methylpyridin-3-amine (CAS 1342782-48-2)
- 6-Ethoxy-4-methylpyridin-3-amine (CAS 142078-43-1)
- 2-Ethoxy-6-methylpyridin-3-amine (CAS 1501925-63-8)
- 2-Ethoxy-5-methylpyridin-3-amine (CAS 1538168-20-5)
- 1-Ethoxy-2-methoxybenzene (CAS 17600-72-5)
Recommended Standards
- 5-Cyclopentyl-1H-pyrazol-3-ol (CAS 467248-37-9)
- 5-Ethoxy-6-methylpyridin-2-amine (CAS 73101-79-8)
- 5-acetylpyridine-2-carbonitrile (CAS 249583-84-4)
- 5-Ethyl-2,6-dimethylpyrimidin-4-ol (CAS 98489-52-2)
- Colterol acetate (CAS 10255-14-8)
- Betaprodine Hydrochloride (CAS 49638-23-5)
- Tert-butyl (3-allyl-4-methoxypyridin-2-yl)carbamate (CAS 1261365-49-4)
- Marbofloxacin EP Impurity A (CAS 115551-40-1)
- 3-(2-(3-Methoxyphenoxy)ethyl)piperidine (CAS 946715-86-2)
- Methyl 5-Amino-2-chlorobenzoate (CAS 42122-75-8)
- 5-(4-Bromophenyl)-1,3-thiazole-2-carboxylic acid (CAS 1397195-30-0)
- Ethyl 4-(4-methoxybenzenesulfonyl)-1-[(4-methylphenyl)methyl]piperidine-4-carboxylate (CAS 212770-64-4)
- (R)-(+)-Alpha,Alpha-Diphenyl-2-Pyrrolidinemethanol (CAS 22348-32-9)
- Palmitoyl Tripeptide-8 TFA salt (CAS 936544-53-5)
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