4-(4-ethylphenoxy)butanoic Acid CAS 87411-26-5
| CAS No. | 87411-26-5 |
| Molecular Formula | C12H16O3 |
| Molecular Weight | 208.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 4-(4-ethylphenoxy)butanoic Acid.
4-(4-ethylphenoxy)butanoic Acid (CAS 87411-26-5), molecular formula C12H16O3 and molecular weight 208.25 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 4-(4-ethylphenoxy)butanoic Acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 208.25 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.
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 | C12H16O3 |
| Molecular Weight | 208.25 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, 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.) | 1981 |
Related ethylphenoxy Standards
- Ethyl 2-(2-ethylphenoxy)acetate (CAS 100256-84-6)
- 2-(4-Ethylphenoxy)butanoic acid (CAS 161790-26-7)
- 2-(4-Ethylphenoxy)-2-methylpropanoic acid (CAS 17413-77-3)
- Ethyl 2-(4-ethylphenoxy)acetate (CAS 71475-45-1)
- 4-(4-Ethylphenoxy)butanamide (CAS 453588-60-8)
- N-(2-(4-ethylphenoxy)ethyl)acetamide (CAS 282104-58-9)
- 4-(4-Ethylphenoxy)piperidine (CAS 97840-12-5)
- N-(2-(3-Ethylphenoxy)ethyl)prop-2-en-1-amine (CAS 433944-62-8)
Recommended Standards
- 4-(4-Ethoxyphenyl)butanoic acid (CAS 58472-30-3)
- 4-(4-methoxy-2-methylphenyl)butanoic Acid (CAS 6307-30-8)
- 4-(3-Methoxyphenyl)-3-methylbutanoic acid (CAS 54961-40-9)
- 4-(4-Methoxy-3-methylphenyl)butanoic acid (CAS 33446-15-0)
- 4-Cyclopropyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS 2241865-20-1)
- (E)-3-(2-fluoro-4-methylphenyl)acrylic acid (CAS 773132-33-5)
- 2-Methyl-1-phenyl-N-propylpropan-1-amine (CAS 93309-41-2)
- 2-(Difluoromethyl)-6-hydroxypyridine-3-acetonitrile (CAS 1806776-99-7)
- 1-Bromo-4-fluoro-2-iodo-5-nitrobenzene (CAS 1807173-61-0)
- (2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)(pyridin-2-yl)methanone (CAS 1443331-23-4)
- Quinoxaline-2,3-dione (CAS 63291-47-4)
- 4-Chloro-6-(trifluoromethyl)-1,2,3-benzotriazole (CAS 1086836-70-5)
- 4-Acetyl-5,6-bis(4-chlorophenyl)pyridazin-3(2H)-one (CAS 75643-31-1)
- Semaglutide impurity 275 (CAS CATO-C4X-2226275)
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