4-(4,5-Dimethoxy-2-methylphenyl)butanoic acid CAS 6575-52-6
| CAS No. | 6575-52-6 |
| Molecular Formula | C13H18O4 |
| Molecular Weight | 238.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-(4,5-Dimethoxy-2-methylphenyl)butanoic acid (CAS 6575-52-6) is a high-purity analytical reference standard with the molecular formula C13H18O4 and a molecular weight of 238.28 g/mol.
Based on its molecular formula C13H18O4, 4-(4,5-Dimethoxy-2-methylphenyl)butanoic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 238.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C13H18O4 |
| Molecular Weight | 238.28 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.) | 1958 |
Related Dimethoxy Standards
- 1-(2,6-Dimethoxy-4-(methoxymethyl)phenyl)propan-1-one (CAS 1288961-19-2)
- 2,5-Dimethoxy-4-morpholinoaniline (CAS 68052-18-6)
- 4,5-Dimethoxy-2-morpholinoaniline (CAS 30058-28-7)
- 387350-76-7 4,6-dimethoxy-2-(1-piperazinylmethyl)pyrimidine 4,6-dimethoxy-2-(piperazin-1-ylmethyl)pyrimidine A824255 (CAS 387350-76-7)
- 4-(2,5-Dimethoxy-phenyl)-4-oxo-butyric acid (CAS 1084-74-8)
- 6,7-Dimethoxy-5-nitro-1,2,3,4-tetrahydroisoquinoline (CAS 1306606-11-0)
- 3-(4,5-Dimethoxy-2-methylphenyl)-2-oxopropanoic acid (CAS 858276-08-1)
- 3,3-Dimethoxy-2,7,10-trioxa-3-silaundecane (CAS 65994-07-2)
Recommended Standards
- 4-(3-Hydroxypyrrolidin-1-yl)-1-naphthonitrile (CAS 664362-70-3)
- 4-(4-Ethoxy-3-fluorophenyl)thiazol-2-amine (CAS 383133-91-3)
- 4-(3-Fluoro-4-methoxyphenyl)-5-methylthiazol-2-amine (CAS 887031-22-3)
- 4-(4-Ethoxy-3-methylphenyl)-4-hydroxybutanoic acid (CAS 879053-56-2)
- (R)-2-(Dimethylamino)-N-(piperidin-3-yl)acetamide hydrochloride (CAS 1286207-71-3)
- 2-Amino-N-ethylbenzamide (CAS 32212-29-6)
- (2,3-Dihydrobenzofuran-4-yl)boronic acid (CAS 1062293-35-9)
- 5-Chloro-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoic acid (CAS 891843-31-5)
- (2-Amino-3-fluoropyridin-4-yl)boronic acid hydrochloride (CAS 2096336-63-7)
- 3-Amino-4-hydroxybenzene-1-sulfonyl fluoride (CAS 368-73-0)
- Isopropyl 2-bromo-5-(2-methyl-1,3-dioxolan-2-yl)benzoate (CAS 1951438-90-6)
- (5,6-Dimethoxypyridin-2-yl)methanamine dihydrochloride (CAS 1255098-74-8)
- Norteasterone (CAS 105319-58-2)
- Semaglutide impurity 85 (CAS CATO-C4X-222685)
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