Benzoic acid, 2-hydroxy-, copper salt (1:x), basic CAS 70983-45-8
| CAS No. | 70983-45-8 |
| Molecular Formula | 2*C7H5O3 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Benzoic acid, 2-hydroxy-, copper salt (1:x), basic (CAS 70983-45-8), molecular formula C7H5O3Cu and molecular weight 200.66 g/mol, is a CATO reference standard with documented purity and traceability.
Benzoic acid, 2-hydroxy-, copper salt (1:x), basic (C7H5O3Cu) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. 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).
As a certified reference material (CRM), Benzoic acid, 2-hydroxy-, copper salt (1:x), basic 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 | 2*C7H5O3 Cu |
| Molecular Weight | 200.66 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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- Cyclohexyl 4-amino-4-methylpentanoate hydrochloride (CAS 1311315-60-2)
- 6-Fluoro-3-methylimidazo[1,2-a]pyridine (CAS 1552499-10-1)
- 1-(3-Aminopyrrolidin-1-yl)-2-phenoxyethan-1-one Hydrochloride (CAS 1803604-41-2)
- Fluralaner Impurity 48 (CAS CATO-C4X-218048)
- 1-(4-Methoxybenzyl)-1H-pyrazole-3-carboxylic acid (CAS 1262849-25-1)
- Clarithromycin-N-methyl-d3 (CAS CATO-CCAD302748)
- Des-Pro36-37-Tirzepatide (CAS CATO-CPTD788938)
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