2-Fluoro-3-methoxybenzaldehyde
2-Fluoro-3-methoxybenzaldehyde (CAS: 103438-88-6) is a fluorinated aromatic aldehyde with the molecular formula FC6H3(OCH3)CHO and a molecular weight of 154.14 g/mol. This compound serves as a valuable building block in organic synthesis. Its structure, featuring both a fluorine atom and an aldehyde group on a methoxy-substituted benzene ring, makes it useful for constructing more complex molecules in research and development settings.

Organic Synthesis Intermediate
2-Fluoro-3-methoxybenzaldehyde is employed as a versatile intermediate in the synthesis of various organic compounds. Its reactive aldehyde functionality and the presence of a fluorine atom allow for diverse chemical transformations.
Pharmaceutical Research
This fluorinated benzaldehyde derivative can be used in the development of novel pharmaceutical agents. The incorporation of fluorine often influences the pharmacokinetic and pharmacodynamic properties of drug candidates.
Agrochemical Development
The compound may serve as a precursor in the synthesis of agrochemicals, contributing to the creation of new crop protection agents or related compounds.
Materials Science
As a functionalized aromatic molecule, it has potential applications in materials science for the development of novel polymers or specialty materials.
| Molecular weight | 154.14 |
|---|---|
| Linear formula | FC6H3(OCH3)CHO |
| Assay | 97% |
| Melting point | 47-51 °C(lit.) |


Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H318Causes serious eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Flash point | >110 °C / >230 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-37/38-41-43 |
| 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 2-Fluoro-3-methoxybenzaldehyde used for?
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2-Fluoro-3-methoxybenzaldehyde is primarily used as a versatile building block and intermediate in organic synthesis, including in pharmaceutical and agrochemical research and development.
What is the CAS number and chemical formula for 2-Fluoro-3-methoxybenzaldehyde?
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The CAS number is 103438-88-6, and the chemical formula is FC6H3(OCH3)CHO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2-Fluoro-3-methoxybenzaldehyde with an assay of 97%. This compound is supplied for research and development purposes and is not represented as USP, BP, EP, or other pharmacopoeia grades.
How should 2-Fluoro-3-methoxybenzaldehyde be handled safely?
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Handling requires appropriate personal protective equipment, including a dust mask (type N95 US recommended), eyeshields, faceshields, and gloves. Avoid breathing dust/fume/gas/mist/vapours/spray. Causes serious eye damage and may cause respiratory irritation. Harmful if swallowed and causes skin irritation. May cause an allergic skin reaction.
How is 2-Fluoro-3-methoxybenzaldehyde packaged and shipped?
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2-Fluoro-3-methoxybenzaldehyde is available for export globally. Packaging is handled according to industry standards to ensure product integrity during transit.
How can I request a quote or sample for 2-Fluoro-3-methoxybenzaldehyde?
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To request a quote or sample, please contact our sales team through the website or by phone, providing the product name and CAS number (103438-88-6).
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