5-[(4-carboxyphenyl)diazenyl]-2-hydroxybenzoic acid CAS 64896-26-0
| CAS No. | 64896-26-0 |
| Molecular Formula | C14H10N2O5 |
| Molecular Weight | 286.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 5-[(4-carboxyphenyl)diazenyl]-2-hydroxybenzoic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 286.20 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).
CATO supplies 5-[(4-carboxyphenyl)diazenyl]-2-hydroxybenzoic acid (CAS 64896-26-0), a certified reference material (molecular formula C14H10N2O5, MW 286.20 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C14H10N2O5 |
| Molecular Weight | 286.20 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 2 |
Related carboxyphenyl Standards
- (E)-5-((2-Carboxyphenyl)diazenyl)-2-hydroxybenzoic Acid (CAS 60473-81-6)
- 2-((3-Carboxyphenyl)carbamoyl)benzoic acid (CAS 19368-09-3)
- 3-(4-Carboxyphenyl)-5-nitrobenzoic acid (CAS 1261931-45-6)
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