3-Fluoro-2-methylbenzoic acid (CAS 699-90-1), also called 3-fluoro-o-toluic acid, is a fluorinated benzoic acid building block supplied by Ossila as a white powder with purity above 98%. Structurally it derives from ortho-toluic acid (methylbenzoic acid), and its several functional groups make it a convenient intermediate for active pharmaceutical ingredients (APIs) and liquid crystal materials.
In medicinal chemistry, the compound serves as the starting material for acetoxy-methylbenzoic anhydride, a derivative showing antibiotic activity with a minimum inhibitory concentration (MIC) of 500–1000 μg/mL. It can also be converted into diarylmethanes, new building blocks for sodium-glucose transporter 2 (SGLT2) inhibitors, by Friedel-Crafts acylation and a subsequent reduction step.
Because the carboxylic acid and fluoride sit in a meta relationship on the ring, the molecule offers a useful scaffold for designing bent-core liquid crystals. It has a molecular weight of 154.14 g/mol and melts at 158 °C – 160 °C.
- Synthesis intermediate for active pharmaceutical ingredients in drug discovery.
- Preparation of acetoxy-methylbenzoic anhydride with antibiotic activity.
- Route to diarylmethane building blocks for SGLT2 inhibitors via Friedel-Crafts acylation and reduction.
- Structural scaffold for bent-core liquid crystal molecules.
- Fluorinated building block for biochemistry research.
| Brand | Ossila |
|---|---|
| CAS number | 699-90-1 |
| Molecular formula | C8H7FO2 |
| Purity | >98% |
| Category | — |
| Pack sizes | 5 g, 10 g |
| Physical form | White powder |
| Storage | — |
- Product code: B2661
- Molecular Weight: 154.14 g/mol
- Synonyms: 3-Fluoro-o-toluic acid
- Classification / Family: Fluorinated building blocks, Benzoic acid derivatives, APIs, Liquid crystals
- Melting Point: 158 °C – 160 °C
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