Fenthion sulfoxide

Also known as: Fenthion sulphoxide, Mesulfenfos, Fensulfoxide, Mesulfenos, MPP sulfoxide, O,O-Dimethyl O-[3-methyl-4-(methylsulfinyl)phenyl] phosphorothioate, O,O-Dimethyl O-[4-(methylsulfinyl)-m-tolyl] phosphorothioate, Phosphorothioic acid, O,O-dimethyl O-[3-methyl-4-(methylsulfinyl)phenyl] ester, Phosphorothioic acid, O,O-dimethyl O-[4-(methylsulfinyl)-m-tolyl] ester, O-[4-(methanesulfinyl)-3-methylphenyl] O,O-dimethyl phosphorothioate

Fenthion sulfoxide (CAS 3761-41-9) is a compound in the Sulfur Compounds category listed in the Jingsj chemical database. It has the molecular formula C10H15O4PS2 and a molecular weight of 294.328 g/mol. Key properties include a boiling point of 397.1±52.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 194.0±30.7 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

3761-41-9

Jingsj CID

J-38185-5

Molecular Formula

C₁₀H₁₅O₄PS₂

Molecular Weight

294.328 g/mol

Category

Sulfur Compounds

Last updated

8/21/2026