4-Fluoro-2-methylbenzoic acid CAS 321-21-1
| CAS No. | 321-21-1 |
| Molecular Formula | C8H7FO2 |
| Molecular Weight | 154.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4-Fluoro-2-methylbenzoic acid 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.
4-Fluoro-2-methylbenzoic acid (CAS 321-21-1) is a high-purity analytical reference standard with the molecular formula C8H7FO2 and a molecular weight of 154.14 g/mol.
Based on its molecular formula C8H7FO2, 4-Fluoro-2-methylbenzoic acid contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 154.14 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C8H7FO2 |
| Molecular Weight | 154.14 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | F-containing |
Related Fluoro Standards
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Recommended Standards
- 4-Fluoro-2-methoxy-benzaldehyde (CAS 450-83-9)
- 4-Fluoro-3-(hydroxymethyl)benzaldehyde (CAS 470717-53-4)
- 4-Fluoro-2-hydroxy-5-methylbenzaldehyde (CAS 504414-06-6)
- 4-Fluoro-3-methylbenzoic Acid (CAS 403-15-6)
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- Abamine (CAS 729612-64-0)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com