3-Chloro-4-hydroxybenzoic Acid Hemihydrate CAS 3964-58-7
| CAS No. | 3964-58-7 |
| Molecular Formula | - |
| Molecular Weight | 181.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 3-Chloro-4-hydroxybenzoic Acid Hemihydrate (CAS 3964-58-7), a certified reference material (molecular formula N/A, MW 181.57 g/mol) for analytical method development and quality control.
3-Chloro-4-hydroxybenzoic Acid Hemihydrate is supplied as a fully characterized reference material; its structural identity, assigned purity, and stability data are documented in the batch-specific Certificate of Analysis (COA).
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), 3-Chloro-4-hydroxybenzoic Acid Hemihydrate 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 | C7H5ClO3·1/2H2O |
| Molecular Weight | 181.57 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
Related Chloro Standards
- 4-Chloro-1-(2,2-difluoroethyl)-1h-pyrazol-3-amine (CAS 1006462-42-5)
- 4-Chloro-3-(difluoromethyl)-1-methyl-1H-pyrazol-5-amine (CAS 2484774-19-6)
- 1-Chloro-4-ethynyl-2-nitrobenzene (CAS 1057669-91-6)
- 2-Chloro-6-(1H-1,2,4-triazol-1-yl)pyrazine (CAS 1086110-85-1)
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Recommended Standards
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- 2-Chloro-3-(difluoromethyl)-5-fluoropyridine (CAS 1374659-31-0)
- 3-(1,3-Benzothiazol-2-yl)propan-1-ol (CAS 3973-09-9)
- 1-(2-Methyl-cyclohexyl)-piperazinedihydrochloride (CAS 435345-39-4)
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- N-(3-chlorophenyl)-2-((4-phenyl-5-(p-tolyl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 332914-58-6)
- 4-Chloro-6,7-dimethylenedioxyquinazoline (CAS 52791-05-6)
- 8-Amino-2-methylquinolin-6-ol (CAS 261347-58-4)
- 1-(Methylsulfanyl)cyclobutane-1-carboxylic acid (CAS 35120-20-8)
- (S)-1-(4-(tert-butyl)phenyl)ethan-1-amine hcl (CAS 1415303-39-7)
- Semaglutide impurity 30 (CAS CATO-C4X-222630)
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