2-Ethoxy-6-methylbenzoic acid CAS 90259-35-1
| CAS No. | 90259-35-1 |
| Molecular Formula | C10H12O3 |
| Molecular Weight | 180.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-Ethoxy-6-methylbenzoic acid (CAS 90259-35-1) is a high-purity analytical reference standard with the molecular formula C10H12O3 and a molecular weight of 180.20 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 2-Ethoxy-6-methylbenzoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 180.20 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
As a certified reference material (CRM), 2-Ethoxy-6-methylbenzoic acid 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 | C10H12O3 |
| Molecular Weight | 180.20 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.) | 1982 |
Related Ethoxy Standards
- 4-Ethoxy-2-methylbenzoic acid (CAS 103323-97-3)
- 3-Ethoxy-4-hydroxybenzimidamide (CAS 1094339-61-3)
- 5-Ethoxy-2-methylbenzoic acid (CAS 112868-41-4)
- 3-Ethoxy-4-methylbenzoic acid (CAS 1250606-59-7)
- 2-(3-Ethoxy-4-hydroxyphenyl)acetaldehyde (CAS 1343147-10-3)
- 3-Ethoxy-1-(5-methylfuran-2-yl)prop-2-en-1-one (CAS 1344648-65-2)
- 1-(2-Ethoxy-6-hydroxyphenyl)ethan-1-one (CAS 2750-25-6)
- 1-(4-Ethoxy-2-hydroxyphenyl)ethan-1-one (CAS 37470-42-1)
Recommended Standards
- 2-Ethoxy-6-methoxybenzaldehyde (CAS 385802-24-4)
- 2-Ethoxybenzhydrazide (CAS 21018-13-3)
- 2-Ethoxy-5-methoxy-benzaldehyde (CAS 39206-04-7)
- 2-Ethoxyphenylacetic Acid (CAS 70289-12-2)
- 2-Bromo-1,1-dichlorocyclopropane (CAS 40745-72-0)
- 4-Amino-N-(1-butyl-1H-imidazol-2-yl)benzenesulfonamide (CAS 71795-54-5)
- 3-methyl-3-(thiophen-3-yl)pyrrolidine-2,5-dione (CAS 1247829-97-5)
- 3-Nitro-1-propyl-1H-pyrazole-4-carbonitrile (CAS 61717-04-2)
- 4-({[(4-chlorophenyl)methyl]amino}methylidene)-3-methyl-4,5-dihydro-1H-pyrazol-5-one (CAS 338975-77-2)
- 2-Fluoro-3-isopropoxy-5-(trifluoromethyl)phenol (CAS 2635937-92-5)
- N-Methyl-3-(methylamino)propanamide hydrochloride (CAS 57180-63-9)
- 3-(Difluoromethyl)-6-methyl-5-nitropyridin-2-amine (CAS 1805979-79-6)
- 5,6-Dimethyl-3-((thiophen-2-ylmethyl)amino)pyridazine-4-carbonitrile (CAS 1147497-97-9)
- Tirzepatide Impurity 43 (CAS CATO-C4X-324043)
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