2,4-Dimethoxybenzenesulfonic acid CAS 7134-13-6
| CAS No. | 7134-13-6 |
| Molecular Formula | C8H10O5S |
| Molecular Weight | 218.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 2,4-Dimethoxybenzenesulfonic acid (C8H10O5S) is characterized by a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
2,4-Dimethoxybenzenesulfonic acid (CAS 7134-13-6), molecular formula C8H10O5S and molecular weight 218.23 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C8H10O5S |
| Molecular Weight | 218.23 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Sulfur Atoms | 1 |
Recommended Standards
- 2,4-Diamino-5-(4-fluorobenzyl)pyrimidine (CAS 836-06-6)
- 3-(2-Fluorobenzyl)-5,6-dihydro-4H-pyrrolo[3,2-d]isoxazole (CAS 603067-86-3)
- 2,4-Diamino-5-(3-fluorobenzyl)pyrimidine (CAS 69945-57-9)
- 3-(4-Fluorobenzyl)-5,6-dihydro-4H-pyrrolo[3,2-d]isoxazole (CAS 603067-65-8)
- (3,5-Difluorophenyl)(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)methanone (CAS 951885-32-8)
- 4-Hydrazinyl-2-(trifluoromethyl)benzonitrile (CAS 1023795-47-2)
- 4-Methylumbelliferyl 2-Acetamido-2-deoxy-3,6-dipivaloyl-β-D-galactopyranoside (CAS 849207-59-6)
- N-(2-Bromoethyl)-3,5-difluorobenzenesulfonamide (CAS 942473-84-9)
- N2-Methylpyrazine-2,3-diamine (CAS 84996-40-7)
- Etoricoxib Impurity 31 (CAS 2724840-93-9)
- Guaiol (CAS 489-86-1)
- N-(4-chloro-2-methylphenyl)-3-oxobutanamide (CAS 20139-55-3)
- Methyl 4,4-dimethyl-2-[(trifluoromethylsulfonyl)oxy]cyclohex-1-ene-1-carboxylate (CAS 1228780-46-8)
- Semaglutide impurity 272 (CAS CATO-C4X-2226272)
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