2-Fluoro-4-methylbenzoic Acid CAS 7697-23-6
| CAS No. | 7697-23-6 |
| Molecular Formula | C8H7FO2 |
| Molecular Weight | 154.14 g/mol |
| 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.
2-Fluoro-4-methylbenzoic Acid (CAS 7697-23-6), molecular formula C8H7FO2 and molecular weight 154.14 g/mol, is a CATO reference standard with documented purity and traceability.
2-Fluoro-4-methylbenzoic Acid (C8H7FO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 2-Fluoro-4-methylbenzoic Acid 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 | 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.) | 1959 |
| Halogen Content | F-containing |
Related Fluoro Standards
- 2-Fluoro-3-methoxybenzaldehyde (CAS 103438-88-6)
- 2-Fluoro-5-methoxybenzaldehyde (CAS 105728-90-3)
- 6-Fluoro-2-hydroxy-3-methylbenzaldehyde (CAS 1067225-48-2)
- 4-Fluoro-N'-hydroxybenzimidamide (CAS 1164246-18-7)
- 7-fluoro-2,3-dihydrobenzofuran-4-ol (CAS 1232774-17-2)
- 3-Fluoro-2-hydroxy-4-methylbenzaldehyde (CAS 1283718-64-8)
- 3-Fluoro-5-(hydroxymethyl)benzaldehyde (CAS 1289164-74-4)
- (Z)-3-Fluoro-N'-hydroxybenzene-1-carboximidamide 1319746-46-7 C7H7FN2O Z9634 (CAS 1319746-46-7)
Recommended Standards
- 2-Fluoro-4-methoxybenzaldehyde (CAS 331-64-6)
- 2-Fluoro-5-methylbenzoic Acid (CAS 321-12-0)
- 2-Fluoro-3-methylbenzoic Acid (CAS 315-31-1)
- 2-Fluoro-6-methylbenzoic Acid (CAS 90259-27-1)
- 3-[2-(4-Allyl-2-methoxyphenoxy)ethyl]piperidinehydrochloride (CAS 1220031-03-7)
- 4-Chloro-5-hydroxyindole-3-acetic acid (CAS 1227599-47-4)
- (R)-5-(Hydroxymethyl)oxazolidin-2-one (CAS 97859-49-9)
- 2-(4-amino-1H-pyrazol-1-yl)acetonitrile (CAS 1152842-04-0)
- (E)-4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde oxime (CAS 1374215-74-3)
- 3-(Piperidin-4-yl)propanoic acid hydrochloride (CAS 51052-79-0)
- 1,2,4-Triazine-3-carboxylic acid sodium salt (CAS 1980038-44-5)
- 5-Fluoro-2-methyl-2H-indazole-3-carboxylic acid (CAS 1780234-79-8)
- 2-Chloro-1-(3-fluoropyridin-2-yl)ethan-1-one (CAS 1357946-75-8)
- Ginseng Tetrapeptide (CAS 178553-95-2)
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