(2-(Methylsulfonyl)phenyl)boronic acid CAS 330804-03-0
| CAS No. | 330804-03-0 |
| Molecular Formula | C7H9BO4S |
| Molecular Weight | 200.02 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.
(2-(Methylsulfonyl)phenyl)boronic acid (CAS 330804-03-0), molecular formula C7H9BO4S and molecular weight 200.02 g/mol, is a CATO reference standard with documented purity and traceability.
(2-(Methylsulfonyl)phenyl)boronic acid (C7H9BO4S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H9BO4S |
| Molecular Weight | 200.02 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2025 |
| Sulfur Atoms | 1 |
Related Methylsulfonyl Standards
- 3-(Methylsulfonyl)phenylboronic Acid (CAS 373384-18-0)
- 2-(Methylsulfonyl)benzoic acid, 98% (CAS 33963-55-2)
- 2-(Methylsulfonyl)isonicotinamide (CAS 1820707-92-3)
- 1-(2-(Methylsulfonyl)pyrimidin-5-yl)ethanone (CAS 87573-83-9)
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Recommended Standards
- (1-Methyl-2-(methylthio)-6-oxo-1,6-dihydropyrimidin-5-yl)boronic acid (CAS 2304634-39-5)
- (3-(Ethoxycarbonyl)thiophen-2-yl)boronic acid (CAS 632325-56-5)
- 4-Chloro-3-cyanobenzoyl chloride (CAS 181283-43-2)
- (5-ethoxycarbonyl-3-thienyl)boronic acid (CAS 957121-19-6)
- 7-methyl-[1,3]thiazolo[4,5-b]quinoxalin-2-amine (CAS 124984-24-3)
- 2-Trifluoromethoxy-5-(trifluoromethyl)benzonitrile (CAS 1803802-50-7)
- 9-Methoxy-2,3-dihydro-[1,4]dioxino[2,3-g]quinoline-7-carboxylic acid (CAS 1351800-12-8)
- N-(4-Cyano-3-hydroxyphenyl)methanesulfonamide (CAS 1243347-27-4)
- 3,5-Dichloro-4-methoxyphenol (CAS 56680-68-3)
- 3,5-Difluoro-2,4-dihydroxybenzaldehyde (CAS 209541-27-5)
- 1-Isobutylpyrrolidin-3-ol (CAS 90227-05-7)
- (2E)-3-[4-(5-Pentylpyridin-2-yl)phenyl]acrylic acid (CAS 1164538-14-0)
- Diethyl 2,2'-(1,3-phenylenebis(thiazole-2,4-diyl))diacetate (CAS 1858256-06-0)
- Des-Gln24-Tirzepatide (CAS CATO-CPTD788949)
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