4-((4-Hydroxyphenyl)sulfonyl)benzoic acid CAS 59216-83-0
| CAS No. | 59216-83-0 |
| Molecular Formula | C13H10O5S |
| Molecular Weight | 278.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-((4-Hydroxyphenyl)sulfonyl)benzoic acid (CAS 59216-83-0), molecular formula C13H10O5S and molecular weight 278.28 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, 4-((4-Hydroxyphenyl)sulfonyl)benzoic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 278.28 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
As a certified reference material (CRM), 4-((4-Hydroxyphenyl)sulfonyl)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 | C13H10O5S |
| Molecular Weight | 278.28 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Sulfur Atoms | 1 |
Related Hydroxyphenyl Standards
- 4-((4-Hydroxyphenyl)diazenyl)benzenesulfonic acid (CAS 2918-83-4)
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Recommended Standards
- 4-((Phenylsulfonyl)oxy)benzoic acid (CAS 7507-41-7)
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- 4-(3-Fluorophenoxy)pyrrolo[1,2-a]quinoxaline (CAS 477886-71-8)
- 3-[(4-Fluoro-2-nitrophenyl)amino]-5,5-dimethylcyclohex-2-en-1-one (CAS 330974-51-1)
- 6-O-ACetyl-1,2:3,5-di-o-methylidene-alpha-d-glucofuranose (CAS 32448-00-3)
- 6-Iodobenzo[d]oxazole (CAS 1823954-57-9)
- (1R,2S)-2-((tert-butoxycarbonyl)amino)-2-methylcyclopentane-1-carboxylic acid (CAS 1212127-10-0)
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- 1-(3-Chloro-4-fluorophenyl)-3-(3,5-dimethylphenyl)propan-1-one (CAS 898780-78-4)
- 2-(5-Bromopyridin-2-yl)-5-nitro-2H-1,2,3-triazole-4-carboxylic acid (CAS 1707609-44-6)
- 5,7-Dichloro-2-(difluoromethyl)-8-fluoropyrido[4,3-d]pyrimidin-4(3H)-one (CAS 2763159-69-7)
- 4-Cyanophenyl 4-methylbenzoate (CAS 32792-42-0)
- 1-Cyclopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,2,3,6-tetrahydropyridine (CAS 2304631-68-1)
- Insulin Degludec Impurity 26 (CAS CATO-C4X-215726)
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