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Fomesafen

Also known as: 5-[2-Chloro-4-(trifluoromethyl)phenoxy]-N-(methylsulfonyl)-2-nitrobenzamide, 5-(2-Chloro-4-trifluoromethylphenoxy)-N-methylsulfonyl-2-nitrobenzamide, 5-[2-Chloro-4-(trifluoromethyl)phenoxy]-N-(methylsulphonyl)-2-nitrobenzamide, 5-(2-Chloro-α,α,α-trifluoro-p-tolyloxy)-N-mesyl-2-nitrobenzamide, FLEX, FLEXSTAR, Fomesafen 97%

Fomesafen (CAS 72178-02-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C15H10ClF3N2O6S and a molecular weight of 438.763 g/mol. Key properties include a melting point of 220-221°C, a boiling point of 531.4±60.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 275.2±32.9 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
72178-02-0
Jingsj CID
J-29601-8
Molecular Formula
C15H10ClF3N2O6S
Molecular Weight
438.763 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point220-221°C
Boiling Point531.4±60.0 °C at 760 mmHg
Density1.6±0.1 g/cm3
Flash Point275.2±32.9 °C
Exact Mass437.990021
PSA126.67000
LogP3.58
Vapor Pressure0.0±1.5 mmHg at 25°C
Refractive Index1.586

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed

Activity & Biological Data

Additional Information[1]. Li-Xia Zhao, et al. Novel Thiazole Phenoxypyridine Derivatives Protect Maize From Residual Pesticide Injury Caused by PPO-Inhibitor Fomesafen. Biomolecules. 2019 Sep 20;9(10):514.

Customs & Trade Information

HS Code2935009016
Summary2935009016 methyl (4-aminophenyl)sulfonylcarbamate。supervision conditions:s(import or export registration certificate for pesticides)。VAT:17.0%。tax rebate rate:9.0%。MFN tarrif:6.5%。general tariff:35.0%

Frequently Asked Questions

What is the CAS number of Fomesafen?

The CAS number of Fomesafen is 72178-02-0.

What are the molecular formula and molecular weight of Fomesafen?

Fomesafen has molecular formula C15H10ClF3N2O6S and molecular weight 438.763 g/mol.

Is Fomesafen hazardous?

Fomesafen has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

What are the upstream and downstream products of Fomesafen?

For Fomesafen, Upstream Products: Methanesulfonamide, Acifluorfen.

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

Last updated:

How to cite: Jingsj. "Fomesafen (CAS 72178-02-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-29601-8 (accessed 2026-11-06).

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