2-(Methylsulfonyl)benzoic acid, 98% CAS 33963-55-2
| CAS No. | 33963-55-2 |
| Molecular Formula | C8H8O4S |
| Molecular Weight | 200.21 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.
CATO supplies 2-(Methylsulfonyl)benzoic acid, 98% (CAS 33963-55-2), a certified reference material (molecular formula C8H8O4S, MW 200.21 g/mol) for analytical method development and quality control.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 2-(Methylsulfonyl)benzoic acid, 98% is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 200.21 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C8H8O4S |
| Molecular Weight | 200.21 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.) | 1966 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 2-(4-Fluoro-2,6-dimethylbenzylidene)malononitrile (CAS 771564-67-1)
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- 2-(1-(2-Fluorophenyl)propylidene)malononitrile (CAS 562812-60-6)
- 2,2'-(Thiophene-2,5-diyl)diacetic acid (CAS 710-23-6)
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- 2-(1,1-Dioxido-3-oxobenzo[d]isothiazol-2(3H)-yl)-N-(3-methoxypropyl)acetamide (CAS 799257-07-1)
- 2-((Isopropylthio)methyl)pyrimidine-4-carboxylic acid (CAS 1484243-09-5)
- 4-Chloro-6-((4-chlorobenzyl)thio)pyrimidin-2-amine (CAS 874606-46-9)
- N-(2-(4-bromophenyl)propan-2-yl)-2-(methylamino)acetamide hydrochloride (CAS 1605626-62-7)
- (1R,4R)-Bicyclo[2.2.1]hept-5-ene-2-sulfonamide (CAS 1864012-33-8)
- n-(3-Ethoxybenzyl)butan-1-amine (CAS 893575-43-4)
- Neuropeptide FF (CAS 99566-27-5)
Why CATO?
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