7,7’-(Carbonyldiimino)bis(4-hydroxynaphthalene-2-sulfonic Acid) CAS 134-47-4
| CAS No. | 134-47-4 |
| Molecular Formula | C21H16N2O9S2 |
| Molecular Weight | 504.49 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 7,7’-(Carbonyldiimino)bis(4-hydroxynaphthalene-2-sulfonic Acid) is closely related to a flavonoid 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.
CATO supplies 7,7’-(Carbonyldiimino)bis(4-hydroxynaphthalene-2-sulfonic Acid) (CAS 134-47-4), a certified reference material (molecular formula C21H16N2O9S2, MW 504.49 g/mol) for analytical method development and quality control.
7,7’-(Carbonyldiimino)bis(4-hydroxynaphthalene-2-sulfonic Acid) (C21H16N2O9S2) contains a flavonoid 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), 7,7’-(Carbonyldiimino)bis(4-hydroxynaphthalene-2-sulfonic 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 | C21H16N2O9S2 |
| Molecular Weight | 504.49 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Recommended Standards
- Azacitidine USP Related Compound B (CAS 6974-32-9)
- 6,6'-(Carbonylbis(azanediyl))bis(4-hydroxynaphthalene-2-sulfonic acid) (CAS 6266-54-2)
- β-L-Ribofuranose 1-Acetate 2,3,5-Tribenzoate (CAS 3080-30-6)
- 6,7-Bis((4-nitrobenzyl)oxy)-2',3',5',6'-tetrahydrospiro[chromene-2,4'-pyran] (CAS 2109805-75-4)
- Remogliflozin Impurity 1 (CAS 1028026-83-6)
- 2-((6-Acetamidopyridin-3-yl)thio)-N-(4-(trifluoromethoxy)phenyl)benzamide (CAS 338962-78-0)
- N-(2-(piperidin-4-yl)phenyl)acetamide (CAS 695813-78-6)
- Butyl[(4-ethoxyphenyl)methyl]amine (CAS 60509-48-0)
- (S)-N1-[(2-Benzimidazolyl)methyl]-N1-(5,6,7,8-tetrahydro-8-quinolyl)-1,4-butanediamine (CAS 558447-26-0)
- 12-Hydroxy-2-methyldodecan-2-yl carbamate (CAS 808757-09-7)
- (4-(4-Methyl-1H-pyrazol-1-yl)-3-(trifluoromethyl)phenyl)boronic acid (CAS 2256708-79-7)
- (Z)-((Dibutylstannanediyl)bis(sulfanediyl))bis(ethane-2,1-diyl) dioleate (CAS 67361-77-7)
- Methyl 4-bromo-2-fluoro-3-nitrobenzoate (CAS 1805190-07-1)
- Semaglutide impurity 89 (CAS CATO-C4X-222689)
Why CATO?
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