Fosthiazate

Also known as: Nemathorin, IKI 1145, O-ethyl S-(1-methylpropyl) 2-oxo-3-thiazolidinylphosphonothioate, S-sec-Butyl O-ethyl 2-oxo-3-thiazolidinylphosphonothioate, Phosphonothioic acid, P-(2-oxo-3-thiazolidinyl)-, O-ethyl S-(1-methylpropyl) ester

Fosthiazate (CAS 98886-44-3) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C9H18NO3PS2 and a molecular weight of 283.348 g/mol. Key properties include a boiling point of 371.3±25.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 178.3±23.2 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed, H311 — Toxic in contact with skin and H331 — Toxic if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 98886-44-3
Jingsj CID: J-1323844-5
Molecular Formula: C₉H₁₈NO₃PS₂
Molecular Weight: 283.348 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	371.3±25.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	178.3±23.2 °C
Exact Mass	283.046570
PSA	107.02000
LogP	0.94
Vapor Pressure	0.0±0.8 mmHg at 25°C
Refractive Index	1.541

GHS Safety & Compliance

Corrosion / Acute Toxicity / Environmental HazardSignal word: Danger

H301 — Toxic if swallowed
H311 — Toxic in contact with skin
H331 — Toxic if inhaled
H317 — May cause an allergic skin reaction
H318 — Causes serious eye damage
H410 — Very toxic to aquatic life with long lasting effects

Activity & Biological Data

Additional Information	[1]. Lianshan Liet al. Chiral organophosphorous pesticide fosthiazate: absolute configuration, stereoselective bioactivity, toxicity, and degradation in vegetables. J Agric Food Chem. 2020 Jul 22;68(29):7609-7616.

Frequently Asked Questions

What is the CAS number of Fosthiazate?

The CAS number of Fosthiazate is 98886-44-3.

What are the molecular formula and molecular weight of Fosthiazate?

Fosthiazate has molecular formula C9H18NO3PS2 and molecular weight 283.348 g/mol.

Is Fosthiazate hazardous?

Fosthiazate has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H311 — Toxic in contact with skin; H331 — Toxic if inhaled.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Fosthiazate (CAS 98886-44-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1323844-5 (accessed 2026-11-07).

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