3-Fluorophenylacetic acid
3-Fluorophenylacetic acid (CAS: 331-25-9), with the molecular formula FC6H4CH2CO2H and a molecular weight of 154.14 g/mol, is a fluorinated organic compound. It serves as a valuable building block in organic synthesis. Its primary application involves its use in the construction of diverse chemical libraries, such as pentaamine and bis-heterocyclic systems, facilitating research and development in medicinal chemistry and materials science.

Synthesis of Chemical Libraries
3-Fluorophenylacetic acid is employed as a key intermediate in the synthesis of complex molecular architectures. It has been specifically utilised in the preparation of pentaamine and bis-heterocyclic compound libraries, supporting drug discovery efforts.
Fluorinated Building Block
As an aryl fluorinated building block, this compound offers a reactive carboxylic acid moiety and a fluorinated phenyl ring. This makes it useful for introducing fluorine atoms into organic molecules, a strategy often employed to modulate pharmacokinetic and physicochemical properties.
Organic Synthesis Reagent
This carboxylic acid derivative is a versatile reagent for various organic transformations. Its structure makes it suitable for reactions involving esterification, amidation, and other modifications, enabling the creation of novel chemical entities.
| Molecular weight | 154.14 |
|---|---|
| Linear formula | FC6H4CH2CO2H |
| Assay | 98% |
| Application | 3-Fluorophenylacetic acid has been used as building block to synthesize the pentaamine and bis-heterocyclic libraries1. |
| Melting point | 42-44 °C(lit.) |

Hazard statements
- H315Causes skin irritation
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 38 |
| Safety statements (S) | 22-24/25 |
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 3-Fluorophenylacetic acid used for?
+
3-Fluorophenylacetic acid is primarily used as a building block in organic synthesis, notably for the preparation of pentaamine and bis-heterocyclic libraries, and as a general fluorinated organic intermediate.
What is the CAS number and molecular formula for 3-Fluorophenylacetic acid?
+
The CAS number for 3-Fluorophenylacetic acid is 331-25-9, and its molecular formula is FC6H4CH2CO2H.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 3-Fluorophenylacetic acid with an assay of 98%. TSS does not represent this product as USP, BP, EP, or other pharmacopoeial grades.
How should 3-Fluorophenylacetic acid be handled safely?
+
According to GHS, 3-Fluorophenylacetic acid is a Warning substance, causing skin irritation (H315). It requires handling with a dust mask (N95), eyeshields, and gloves. Avoid breathing dust and ensure adequate ventilation.
Can Tech Serve Solutions export 3-Fluorophenylacetic acid?
+
Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 3-Fluorophenylacetic acid.
How do I request a quote or sample for 3-Fluorophenylacetic acid?
+
To request a quote or sample of 3-Fluorophenylacetic acid, please contact our sales team through the designated channels on the Tech Serve Solutions website.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis