4-((Methylsulfonyl)oxy)benzoic acid CAS 28547-25-3
| CAS No. | 28547-25-3 |
| Molecular Formula | C8H8O5S |
| Molecular Weight | 216.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C8H8O5S, 4-((Methylsulfonyl)oxy)benzoic acid contains a sulfone group, 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 216.21 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).
4-((Methylsulfonyl)oxy)benzoic acid (CAS 28547-25-3) is a high-purity analytical reference standard with the molecular formula C8H8O5S and a molecular weight of 216.21 g/mol.
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), 4-((Methylsulfonyl)oxy)benzoic 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 | C8H8O5S |
| Molecular Weight | 216.21 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1965 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 4-(3-Fluorophenoxy)benzaldehyde (CAS 939758-29-9)
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- 7-Methoxy-6-methylisoquinoline-5,8-dione (CAS 76177-29-2)
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- D-Phenylalanine, N-[N-[(1,1-dimethylethoxy)carbonyl]-D-leucyl]-, phenylmethyl ester (CAS 159549-97-0)
- 1-(4-Bromophenyl)-2-((5-methyl-4H-1,2,4-triazol-3-yl)thio)ethanone (CAS 37664-35-0)
- 6,7-difluoroquinolin-3-ol (CAS 1026706-70-6)
- Semaglutide Impurity 143 (CAS CATO-C4X-2226143)
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