5-Chlorosalicylic Acid CAS 321-14-2
| CAS No. | 321-14-2 |
| Molecular Formula | C7H5ClO3 |
| Molecular Weight | 172.57 g/mol |
| 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.
CATO supplies 5-Chlorosalicylic Acid (CAS 321-14-2), a certified reference material (molecular formula C7H5ClO3, MW 172.57 g/mol) for analytical method development and quality control.
Based on its molecular formula C7H5ClO3, 5-Chlorosalicylic Acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 172.57 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H5ClO3 |
| Molecular Weight | 172.57 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
Related Chlorosalicylic Standards
Recommended Standards
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- 3-(4-Bromophenyl)oxetan-3-amine (CAS 1349972-68-4)
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- Posaconazole Impurity 269 (CAS CATO-C4X-1208269)
- Ethyl-6-aminobenzofuran-2-carboxylate (CAS 76897-56-8)
- 2-(2-Methylcyclopentyl)ethyl oxazole-4-carboxylate (CAS 89724-27-6)
- 2-(3-Methyl-2,4-dioxothiazolidin-5-yl)acetic acid (CAS 613656-83-0)
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Why CATO?
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