3-(4-Ethoxyphenyl)-3-methylbutanoic acid CAS 115440-37-4
| CAS No. | 115440-37-4 |
| Molecular Formula | C13H18O3 |
| Molecular Weight | 222.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 222.28 g/mol gives 3-(4-Ethoxyphenyl)-3-methylbutanoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
3-(4-Ethoxyphenyl)-3-methylbutanoic acid (CAS 115440-37-4) is a high-purity analytical reference standard with the molecular formula C13H18O3 and a molecular weight of 222.28 g/mol.
3-(4-Ethoxyphenyl)-3-methylbutanoic acid (C13H18O3) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, 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.
As a certified reference material (CRM), 3-(4-Ethoxyphenyl)-3-methylbutanoic 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 | C13H18O3 |
| Molecular Weight | 222.28 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.) | 1989 |
Related Ethoxyphenyl Standards
- 2-(4-Ethoxyphenyl)-3-methylbutanoic acid (CAS 102270-89-3)
- 2-(2-Ethoxyphenyl)-3-methylbutanoic acid (CAS 1341166-95-7)
- Methyl 2-(4-ethoxyphenyl)-2-methylpropanoate (CAS 345352-38-7)
- 1-(4-Ethoxyphenyl)-1H-tetrazole-5-thiol (CAS 15182-68-0)
- 1-(2-Ethoxyphenyl)-1H-1,2,3,4-tetrazole-5-thiol (CAS 22347-26-8)
- 5-(2-ethoxyphenyl)-1,3,4-oxadiazole-2-thiol (CAS 19982-38-8)
- 5-(4-Ethoxyphenyl)-1,3,4-oxadiazole-2-thiol (CAS 84159-98-8)
- N-(2-Ethoxyphenyl)-4,5-dihydro-1,3-thiazol-2-amine (CAS 379729-91-6)
Recommended Standards
- {[2-(4-fluorophenyl)-1,3-thiazol-4-yl]methyl}(methyl)amine (CAS 1153070-05-3)
- 2-(4-aminophenyl)-N-(1-hydroxybutan-2-yl)acetamide (CAS 1154945-89-7)
- 3-Methoxy-4-(3-methylbutoxy)benzaldehyde (CAS 114991-69-4)
- 2-(4-Aminophenyl)-N-(1-hydroxy-2-methylpropan-2-yl)acetamide (CAS 1155074-38-6)
- 4-(2-Methoxyethyl)-5-(4-((4-methylpiperazin-1-yl)sulfonyl)phenyl)-4H-1,2,4-triazole-3-thiol (CAS 917749-99-6)
- 2-Propionylacetophenone (CAS 5331-64-6)
- 4-Methyl-2-(phenylsulfonyl)-6,7-dihydro-5H-cyclopenta[d]pyrimidine (CAS 339019-62-4)
- 4,8-Dimethyl-2-(morpholin-4-yl)quinoline (CAS 34500-48-6)
- (4r)-2-(3,4,5-Trimethoxyphenyl)-1,3-thiazolidine-4-carboxylic acid (CAS 637032-02-1)
- Notoginsenoside R2 (CAS 80418-25-3)
- Clindamycin Impurity 18 (CAS CATO-C4X-134118)
- (S)-4-(3,4-Dichlorophenyl)but-3-yn-2-ol (CAS 2381027-78-5)
- 2-Amino-4-(pyridin-2-yl)butanoic acid dihydrochloride (CAS 2103648-47-9)
- Tirzepatide Impurity 21 X TFA Salt (CAS CATO-C4X-324021)
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