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2-Fluoro-4-methoxybenzoic acid

Also known as: 2-Fluoro-p-anisic acid, 2-Fluor-4-methoxy-benzoesaeure, 2-Fluor-anissaeure, 4-Carboxy-3-fluoroanisole, Benzoic acid, 2-fluoro-4-methoxy-, MFCD00509373, QVR BF DO1, RARECHEM AL BE 0456, BUTTPARK 32\01-80

2-Fluoro-4-methoxybenzoic acid (CAS 394-42-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H7FO3 and a molecular weight of 170.138 g/mol. Key properties include a melting point of 194-198°C, a boiling point of 257.8±20.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 109.7±21.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
394-42-3
Jingsj CID
J-1968090-1
Molecular Formula
C8H7FO3
Molecular Weight
170.138 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Melting Point194-198°C
Boiling Point257.8±20.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point109.7±21.8 °C
Exact Mass170.037918
PSA46.53000
LogP1.97
Vapor Pressure0.0±0.6 mmHg at 25°C
Refractive Index1.524

Frequently Asked Questions

What is the CAS number of 2-Fluoro-4-methoxybenzoic acid?

The CAS number of 2-Fluoro-4-methoxybenzoic acid is 394-42-3.

What are the molecular formula and molecular weight of 2-Fluoro-4-methoxybenzoic acid?

2-Fluoro-4-methoxybenzoic acid has molecular formula C8H7FO3 and molecular weight 170.138 g/mol.

What are the upstream and downstream products of 2-Fluoro-4-methoxybenzoic acid?

For 2-Fluoro-4-methoxybenzoic acid, Upstream Products: 2-Fluoro-4-methoxybenzaldehyde, 2'-Fluoro-4'-methoxyacetophenone, Methyl bromide; Downstream Products: 1-(Chloromethyl)-2-fluoro-4-methoxybenzene, (2-Fluoro-4-methoxyphenyl)methanol, 2-Fluoro-4-methoxybenzoyl chloride.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "2-Fluoro-4-methoxybenzoic acid (CAS 394-42-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1968090-1 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.