4-Oxo-4-(4-isopropoxyphenyl)butyric acid CAS 91121-67-4
| CAS No. | 91121-67-4 |
| Molecular Formula | C13H16O4 |
| Molecular Weight | 236.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4-Oxo-4-(4-isopropoxyphenyl)butyric acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
CATO supplies 4-Oxo-4-(4-isopropoxyphenyl)butyric acid (CAS 91121-67-4), a certified reference material (molecular formula C13H16O4, MW 236.26 g/mol) for analytical method development and quality control.
4-Oxo-4-(4-isopropoxyphenyl)butyric acid (C13H16O4) 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 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.
Physical & Chemical Properties
| Molecular Formula | C13H16O4 |
| Molecular Weight | 236.26 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1983 |
Related Oxo Standards
- Ethyl 2-(2-isopropoxyphenyl)-2-oxoacetate (CAS 1373519-34-6)
- 4-(3-Isopropoxyphenyl)-4-oxobutanoic acid (CAS 845790-42-3)
- Ethyl 2-(3-isopropoxyphenyl)-2-oxoacetate (CAS 845790-54-7)
- 2-(4-Isopropoxyphenyl)-3-methylbutanoic acid (CAS 1225999-75-6)
- 3-(4-Isopropoxyphenyl)-3-methylbutanoic acid (CAS 1420791-00-9)
- 2-(4-Isopropoxyphenyl)-1-methylpiperazine (CAS 1368890-59-8)
- 1-(4-Isopropoxyphenyl)hexan-2-one (CAS 88795-91-9)
- trans-2-(3-Isopropoxyphenyl)cyclohexanol (CAS 933674-56-7)
Recommended Standards
- 4-Oxo-4-(3-phenylpropoxy)butanoic acid (CAS 819802-21-6)
- 4-Oxo-4-(4-propoxyphenyl)butanoic acid (CAS 39496-82-7)
- 4-Methoxy-3-((tetrahydrofuran-2-yl)methoxy)benzaldehyde (CAS 919017-05-3)
- 5-(2-Methoxy-5-methylphenyl)-5-oxovaleric acid (CAS 71472-14-5)
- D-fructose-2,5- (CAS 141258-84-6)
- (S)-1-(5-chloro-3-fluoropyridin-2-yl)ethan-1-amine (CAS 1932020-62-6)
- tert-Butyl 3-(2-oxoethoxy)propanoate (CAS 1246247-28-8)
- Brivaracetam impurity 100 (CAS CATO-C4X-2007100)
- (2S,4S)-4-[(5-Bromo[1,1-biphenyl]-2-yl)oxy]-1-(tert-butoxycarbonyl)-2-pyrrolidinecarboxylic acid (CAS 1354487-39-0)
- 4-Methyl-2-nitrophenyl Cyanate (CAS 1601-69-0)
- (S)-1-(3-Fluoro-4-methoxyphenyl)ethanamine hydrochloride (CAS 1980007-86-0)
- 7-Chloro-5-phenyl-2-(p-tolyl)oxazolo[4,5-d]pyrimidine (CAS 1225162-95-7)
- Ethyl 5-amino-1H-indazole-3-carboxylate (CAS 885278-45-5)
- D-Ile12-Tirzepatide (CAS CATO-CPTD788921)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com