Sodium 4-chloro-2-methylbenzoate CAS 203261-42-1
| CAS No. | 203261-42-1 |
| Molecular Formula | C8H6ClO2 |
| 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.
Sodium 4-chloro-2-methylbenzoate (CAS 203261-42-1), molecular formula C8H6ClO2Na and molecular weight 192.57 g/mol, is a CATO reference standard with documented purity and traceability.
Sodium 4-chloro-2-methylbenzoate (C8H6ClO2Na) contains a salt form, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, 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).
CATO manufactures Sodium 4-chloro-2-methylbenzoate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H6ClO2 Na |
| Molecular Weight | 192.57 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2015 |
| Halogen Content | Cl-containing |
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Recommended Standards
- Benzyl (3-bromopropyl)carbamate (CAS 39945-54-5)
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- Ethyl (3-methylbenzyl)glycinate (CAS 501653-59-4)
- Iprobenfos (CAS 26087-47-8)
- (2-Methylpropyl)[(2,3,4-trimethoxyphenyl)methyl]amine (CAS 893574-83-9)
- Cabotegravir Impurity 4 HCI (CAS CATO-C4X-28764)
- Methyl 3-((cyclobutylmethyl)amino)-2,2-dimethylpropanoate (CAS 1498943-64-8)
- 1-Undecanol (CAS 112-42-5)
- 2-(1h-Pyrazol-1-yl)-5-(trifluoromethyl)aniline (CAS 883881-78-5)
- Semaglutide impurity 26 (CAS CATO-C4X-222626)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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