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2-Fluoro-3-methoxybenzoic acid

CAS No.
137654-20-7
Chemical Name:
2-Fluoro-3-methoxybenzoic acid
Synonyms
3-Carboxy-2-fluoroanisole;2-Fluoro-3-Methoxybenzoic acd;2-Fluoro-3-methoxybenzoic acid;2-Fluoro-3-methoxybenzoicacid98%;Benzoic acid, 2-fluoro-3-methoxy-;2-Fluoro-3-methoxybenzoic acid 98%;2-Fluoro-3-Methoxybenzoic Acid(WX612106)
CBNumber:
CB8780164
Molecular Formula:
C8H7FO3
Molecular Weight:
170.14
MDL Number:
MFCD02179621
MOL File:
137654-20-7.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-09-12 18:55:52

2-Fluoro-3-methoxybenzoic acid Properties

Melting point 157-160°C
Boiling point 296.6±20.0 °C(Predicted)
Density 1.307±0.06 g/cm3(Predicted)
storage temp. Inert atmosphere,Room Temperature
form powder to crystal
pka 3.15±0.10(Predicted)
color White to Light yellow
InChI InChI=1S/C8H7FO3/c1-12-6-4-2-3-5(7(6)9)8(10)11/h2-4H,1H3,(H,10,11)
InChIKey AVGWCJLTQZQLCN-UHFFFAOYSA-N
SMILES C(O)(=O)C1=CC=CC(OC)=C1F

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P261-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P362+P364-P403+P233-P501c
Hazard Codes  Xi,Xn
Risk Statements  36/37/38-22
Safety Statements  26-36/37/39
HazardClass  IRRITANT
HS Code  2918999090
NFPA 704
0
2 0

2-Fluoro-3-methoxybenzoic acid price More Price(51)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
TCI Chemical F1218 2-Fluoro-3-methoxybenzoic Acid >98.0%(GC)(T) 137654-20-7 1g $31 2026-04-30 Buy
TCI Chemical F1218 2-Fluoro-3-methoxybenzoic Acid >98.0%(GC)(T) 137654-20-7 5g $99 2026-04-30 Buy
Apolloscientific PC9295 2-Fluoro-3-methoxybenzoic acid 99% 137654-20-7 5g $32 2026-06-04 Buy
Apolloscientific PC9295 2-Fluoro-3-methoxybenzoic acid 99% 137654-20-7 25g $128 2026-06-04 Buy
Apolloscientific PC9295 2-Fluoro-3-methoxybenzoic acid 99% 137654-20-7 100g $414 2026-06-04 Buy
Product number Packaging Price Buy
F1218 1g $31 Buy
F1218 5g $99 Buy
PC9295 5g $32 Buy
PC9295 25g $128 Buy
PC9295 100g $414 Buy

2-Fluoro-3-methoxybenzoic acid Chemical Properties, Uses, Production

Uses

2-Fluoro-3-methoxybenzoic acid (2FMBA) is an intramolecular lithium compound that has been shown to be a potent inhibitor of dihydrofolate reductase. Experiments have shown that 2FMBA can inhibit bacterial growth, bind to DNA, and inhibit RNA synthesis in bacteria.

Synthesis

2-Fluoroanisole

321-28-8

2-FLUORO-3-METHOXYBENZOIC ACID

137654-20-7

Step 1. Preparation of 2-fluoro-3-methoxybenzoic acid. Potassium tert-butoxide (30.80 g, 274 mmol) was dissolved in anhydrous tetrahydrofuran (300 mL) under nitrogen protection and the mixture was cooled to -78 °C. A hexane solution of 1.6 M n-butyllithium (172 mL, 275 mmol) was slowly added dropwise, and stirring was continued for 15 minutes after completion of the drop. Subsequently, 2-fluoroanisole (31.35 g, 248 mmol) was added and the reaction mixture continued to be stirred at -78 °C for 1.8 hours. Upon completion of the reaction, the mixture was slowly poured into a 2 L Erlenmeyer flask containing dry ice and gradually warmed to room temperature. Water (250 mL) was added to dilute and the organic layer was separated by extraction with ether (160 mL). The aqueous layer was acidified with concentrated hydrochloric acid to pH < 2. A solid was precipitated and collected by filtration to give 2-fluoro-3-methoxybenzoic acid (21.43 g, 51% yield) as a yellow solid. Melting point 155-160 °C. 1H NMR (acetone-d6, 300 MHz) δ 7.46 (ddd, J = 6.0, 1.8, 1.4 Hz, 1H), 7.36 (dt, J = 1.6, 8.1 Hz, 1H), 7.20 (dt, J = 1.4, 8.1 Hz, 1H), 3.92 (s, 3H); 19F NMR (acetone- d6, 300 MHz) δ -134.04 (m). Mass spectrum (ESI+): m/z 171 [M+H]+.

References

[1] Patent: US5547975, 1996, A

Global Suppliers ( 165)
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Shanghai Harvest Chemical Industrial Co., Ltd. 15721252604 17321035817 sales@harvest-chem.com China 2829 64
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Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
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Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
Shandong Xiya Chemical Co., Ltd 13355009207 13355009207 3007715519@qq.com China 18722 57
Tianjin Jinyuda Chemical Co., Ltd. 022-58013646 13011382049 sales@jinyudachem.com China 1976 55

View Latest Price from 2-Fluoro-3-methoxybenzoic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2-FLUORO-3-METHOXYBENZOIC ACID pictures 2019-07-06 2-FLUORO-3-METHOXYBENZOIC ACID
137654-20-7
$1.00 1KG 98% 100KG Career Henan Chemical Co
2-Fluoro-3-methoxybenzoic acid 98% 2-Fluoro-3-methoxybenzoicacid98% 2-Fluoro-3-Methoxybenzoic Acid(WX612106) 3-Carboxy-2-fluoroanisole 2-Fluoro-3-Methoxybenzoic acd Benzoic acid, 2-fluoro-3-methoxy- 2-Fluoro-3-methoxybenzoic acid 137654-20-7 Fluorine series blocks Carboxes FluoroCompounds Benzoic acid