2,2'-(((Sulfonylbis(4,1-phenylene))bis(azanylylidene))bis(methanylylidene))diphenol CAS 7251-84-5
| CAS No. | 7251-84-5 |
| Molecular Formula | C26H20N2O4S |
| Molecular Weight | 456.51 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 2,2'-(((Sulfonylbis(4,1-phenylene))bis(azanylylidene))bis(methanylylidene))diphenol is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
2,2'-(((Sulfonylbis(4,1-phenylene))bis(azanylylidene))bis(methanylylidene))diphenol (CAS 7251-84-5), molecular formula C26H20N2O4S and molecular weight 456.51 g/mol, is a CATO reference standard with documented purity and traceability.
2,2'-(((Sulfonylbis(4,1-phenylene))bis(azanylylidene))bis(methanylylidene))diphenol (C26H20N2O4S) contains a steroid core, an amide group, a sulfone 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 2,2'-(((Sulfonylbis(4,1-phenylene))bis(azanylylidene))bis(methanylylidene))diphenol 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 | C26H20N2O4S |
| Molecular Weight | 456.51 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Sulfonylbis Standards
- 4,4'-Sulfonylbis(iodobenzene) (CAS 40915-22-8)
- 2,2'-Sulfonylbis(4-(2,4,4-trimethylpentan-2-yl)phenol) (CAS 15452-89-8)
- 4,4-((Sulfonylbis(4,1-phenylene))-bis(oxy))dianiline (CAS 13080-89-2)
- 1,1'-(Sulfonylbis(3,1-phenylene))bis(1H-pyrrole-2,5-dione) (CAS 68555-55-5)
- ((sulfonylbis(4,1-phenylene))bis(azanediyl))dimethanesulfinic acid (CAS 144-76-3)
- 4,4'-Sulfonylbis(phenoxybenzene) (CAS 1623-91-2)
- 6,6'-(((Sulfonylbis(4,1-phenylene))bis(azanylylidene))bis(methanylylidene))bis(2-methoxyphenol) (CAS 124116-83-2)
- 4,4'-Sulfonylbis(2-nitrobenzoic acid) (CAS 22437-96-3)
Recommended Standards
- 1-(4-((2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)sulfonyl)piperazin-1-yl)-2-(6-methylbenzofuran-3-yl)ethan-1-one (CAS 847939-23-5)
- 4-(Benzo[d][1,3]dioxol-5-yl)-2-((3-methoxybenzyl)thio)-1,4-dihydro-5H-indeno[1,2-d]pyrimidin-5-one (CAS 861211-19-0)
- 1-(2-(Diethylamino)ethyl)-4-(3-fluoro-4-methoxybenzoyl)-3-hydroxy-5-(4-methoxyphenyl)-1H-pyrrol-2(5H)-one (CAS 618074-77-4)
- 4-[(Hexahydro-1H-azepin-1-yl)sulfonyl]-N-[5-(3-methoxyphenyl)-1,3,4-oxadiazol-2-yl]benzamide (CAS 533870-02-9)
- Methyl 4-{[(prop-2-yn-1-yl)amino]methyl}benzoate (CAS 133933-33-2)
- 6-Bromo-2,3,4-trifluorophenol (CAS 1517643-70-7)
- 2-(Quinolin-5-yl)ethan-1-amine (CAS 98421-28-4)
- Piribedil Impurity 24 (CAS 1109275-97-9)
- Benzyl 5-amino-4-((tert-butoxycarbonyl)amino)-5-oxopentanoate (CAS 292870-04-3)
- Methyl 4-fluoro-3-methoxyphenylacetate (CAS 1427397-59-8)
- (4-isothiocyanatobutyl)dimethylamine (CAS 507231-28-9)
- (2-Methoxy-1,4-phenylene)dimethanamine (CAS 119402-72-1)
- 3-Acetyl-8-methoxy-2H-cyclohepta[b]furan-2-one (CAS 1210-38-4)
- Pancreatic Polypeptide (1-17)-(Ala31,Aib32)-Neuropeptide Y (18-36) (human) trifluoroacetate salt (CAS 313988-70-4)
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