4-Fluoro-3-methylaniline
4-Fluoro-3-methylaniline (CAS: 452-69-7), with the molecular formula FC6H3(CH3)NH2 and a molecular weight of 125.14 g/mol, is a fluorinated aromatic amine. It serves as a crucial building block in organic synthesis. This compound is primarily utilised in the development of pharmaceuticals, agrochemicals, and other complex organic molecules where precise structural incorporation of fluorine and amine functionalities is required.
- IUPAC
- 5-Amino-2-fluorotoluene

Pharmaceutical Intermediates
4-Fluoro-3-methylaniline is employed in the synthesis of active pharmaceutical ingredients (APIs). Its structure is valuable for introducing fluorinated methylphenylamine moieties into drug candidates, potentially influencing pharmacokinetic and pharmacodynamic properties.
Agrochemical Synthesis
This compound acts as a key intermediate in the production of certain pesticides and herbicides. The incorporation of fluorine can enhance the biological activity and stability of agrochemical products.
Organic Building Block
As a versatile building block, 4-Fluoro-3-methylaniline is utilised in various research and development projects for creating novel organic compounds. Its distinct substitution pattern allows for specific chemical transformations.
Material Science Research
The unique electronic properties imparted by the fluorine atom make this aniline derivative a potential component in the synthesis of advanced materials, including specialty polymers and electronic chemicals.
| Molecular weight | 125.14 |
|---|---|
| Linear formula | FC6H3(CH3)NH2 |
| Assay | 97% |
| Melting point | 34-38 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Flash point | 104 °C / 219.2 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 4-Fluoro-3-methylaniline used for?
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4-Fluoro-3-methylaniline is primarily used as a building block in organic synthesis, particularly for the development of pharmaceuticals and agrochemicals.
What is the CAS number and formula for 4-Fluoro-3-methylaniline?
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The CAS number is 452-69-7 and the molecular formula is FC6H3(CH3)NH2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 4-Fluoro-3-methylaniline with an assay of 97%. This product is supplied for research and development purposes and is not represented as USP, BP, EP, or any other pharmacopoeia grade.
How should 4-Fluoro-3-methylaniline be handled?
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4-Fluoro-3-methylaniline is a Warning substance that causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. Ensure adequate ventilation and avoid breathing dust.
Is 4-Fluoro-3-methylaniline a controlled substance?
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The provided data does not indicate that 4-Fluoro-3-methylaniline is a controlled substance.
How is 4-Fluoro-3-methylaniline packed and shipped?
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Tech Serve Solutions exports fine chemicals globally, ensuring appropriate packaging and compliance with international shipping regulations for chemical products. Specific packaging details can be provided upon request.
How can I request a sample or quote for 4-Fluoro-3-methylaniline?
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To request a sample or obtain a quotation for 4-Fluoro-3-methylaniline, please contact our sales department through the website or via the provided contact details.
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