Benzoic acid, 2,4-dihydroxy-, copper salt CAS 70983-44-7
| CAS No. | 70983-44-7 |
| Molecular Formula | 2*C7H5O4 |
| Molecular Weight | N/A |
| 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.
Benzoic acid, 2,4-dihydroxy-, copper salt (CAS 70983-44-7), molecular formula C7H5O4Cu and molecular weight 216.66 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Benzoic acid, 2,4-dihydroxy-, copper salt (C7H5O4Cu) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | 2*C7H5O4 Cu |
| Molecular Weight | 216.66 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
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Recommended Standards
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- 2-[(Ethylamino)methyl]-4-nitrophenol (CAS 71130-60-4)
- 2-Bromo-5-ethyl-1,3,4-thiadiazole (CAS 57709-49-6)
- N-Allylcyanamide (CAS 36333-01-4)
- 1,5-Diamino-1H-imidazole-4-carbimidoyl cyanide (CAS 141563-07-7)
- Ethyl 3-amino-3-(2-bromophenyl)propanoate, HCl (CAS 502841-89-6)
- 1-(2-Methoxyethyl)-1H-imidazole-2-carbonitrile (CAS 1449144-34-6)
- Peptide YY (human) trifluoroacetate salt (CAS 118997-30-1)
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