3-Fluoro-2-methyl-4-(methylsulfonyl)benzoic acid CAS 118939-18-7
| CAS No. | 118939-18-7 |
| Molecular Formula | C9H9FO4S |
| Molecular Weight | 232.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-Fluoro-2-methyl-4-(methylsulfonyl)benzoic acid is closely related to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-Fluoro-2-methyl-4-(methylsulfonyl)benzoic acid (CAS 118939-18-7), molecular formula C9H9FO4S and molecular weight 232.23 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system, 3-Fluoro-2-methyl-4-(methylsulfonyl)benzoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 232.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 3-Fluoro-2-methyl-4-(methylsulfonyl)benzoic 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.
Physical & Chemical Properties
| Molecular Formula | C9H9FO4S |
| Molecular Weight | 232.23 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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.) | 1990 |
| Halogen Content | F-containing |
| Sulfur Atoms | 1 |
Related Fluoro Standards
- Methyl 3-Fluoro-4-(methylsulfonyl)benzoate (CAS 1215074-49-9)
- N-(2-fluoro-5-sulfamoylphenyl)acetamide (CAS 1308184-49-7)
- 4-fluoro-3-methanesulfonyl-5-methylbenzoic acid (CAS 1423033-70-8)
- Methyl 4-Fluoro-3-(methylsulfonyl)benzoate (CAS 160819-39-6)
- 3-Fluoro-4-(methylsulfonamido)benzamide (CAS 1820605-06-8)
- Methyl 2-fluoro-4-(methylsulfonyl)benzoate (CAS 1820716-37-7)
- (4-Fluoro-3-methylphenyl)(4-fluorophenyl)methanone (CAS 59396-50-8)
- 3’-Fluoro-2-(3-fluorophenyl)acetophenone (CAS 40281-51-4)
Recommended Standards
- 1-(2-Fluorophenyl)-2-(4-fluorophenyl)ethanone (CAS 1184754-66-2)
- 4-(2-Acetyl-3-oxobut-1-en-1-yl)benzoic acid (CAS 119757-24-3)
- 4',6-Difluoro-2'-methyl-[1,1'-biphenyl]-3-carbaldehyde (CAS 1184584-08-4)
- 1-(2-Fluorophenyl)-2-(3-fluorophenyl)ethanone (CAS 1183418-91-8)
- 2-(4-chlorophenyl)butanenitrile (CAS 39066-10-9)
- Acetylguanidine 13C,15N3 (CAS 5699-40-1)
- 3-(n-(5-Bromo-2-methoxyphenyl)sulfamoyl)-4-chlorobenzoic acid (CAS 522624-47-1)
- 2-(4,7-Dichloro-2-phenyl-1H-indol-3-yl)ethanamine (CAS 519003-54-4)
- EMImPF6 (CAS 155371-19-0)
- (+/-)-7-Azabicyclo[4.2.0]octan-8-on (1S,6R/1R,6S)-7-azabicyclo[4.2.0]octan-8-one 34102-49-3 (CAS 34102-49-3)
- 8-Bromoquinoline-7-carboxylic acid (CAS 1312134-45-4)
- 1,5-dimethyl-2,3-dihydro-1H-indol-2-one (CAS 82577-43-3)
- 3-(2-Biphenyl)-2-chloro-1-propene (CAS 951889-99-9)
- D-Tyr1-Tirzepatide (CAS CATO-CPTD788928)
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