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Sulfur and phosphorus compounds

Demephion-O

Also known as O,O-Dimethyl O-(2-(methylthio)ethyl) phosphorothioate, Phosphorothioic acid, O,O-dimethyl O-(2-(methylthio)ethyl) ester, dimethoxy-(2-methylsulfanylethoxy)-sulfanylidene-lambda5-phosphane

CAS 682-80-4Formula C5H13O3PS2Molar mass 216.26 g/molEC 211-666-9
GHS signal word: Danger. Pictograms: Acute toxicity (severe)
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Demephion-O chemical structure, C5H13O3PS2, CAS 682-80-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
682-80-4
Formula
C5H13O3PS2
Molar mass
216.26 g/mol
EC number
211-666-9
HS code
293090
Category
Sulfur and phosphorus compounds

What is Demephion-O?

Plain description, key identifiers and synonyms

Demephion-O is an organic thiophosphate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dimethoxy-(2-methylsulfanylethoxy)-sulfanylidene-λ5-phosphane
CAS number
682-80-4 CAS number cross-checked
EC number
211-666-9
Molecular formula
C5H13O3PS2
UNII
0O09494G0U
InChIKey
IATBEFPCSHFQJS-UHFFFAOYSA-N
InChI
InChI=1S/C5H13O3PS2/c1-6-9(10,7-2)8-4-5-11-3/h4-5H2,1-3H3
SMILES (canonical and isomeric)
COP(=S)(OC)OCCSC

Synonyms

  • O,O-Dimethyl O-(2-(methylthio)ethyl) phosphorothioate
  • Phosphorothioic acid, O,O-dimethyl O-(2-(methylthio)ethyl) ester
  • dimethoxy-(2-methylsulfanylethoxy)-sulfanylidene-lambda5-phosphane
  • O,O-dimethyl O-[2-(methylsulfanyl)ethyl] phosphorothioate

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
216.26 g/molcalc.
Exact mass
216.0044 Dacalc.
LogP (octanol/water)
1.88calc.
Topological polar surface area
27.69 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
6calc.
Heavy atoms
11calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)

Hazard statements

  • H300Fatal if swallowed.
  • H311Toxic in contact with skin.
Precautionary statements (12)
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P302 + P352If on skin: Wash with plenty of water.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Demephion-O suppliers

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Demephion-O price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 015-116-00-7

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Demephion-O is traded under.

HS 2930.90Indicative HS code

Organo-sulphur compounds, other

World exports in 2024
$5.83B
+0.1% vs 2023, imports $5.93B
2019 to 2024
Top exporters
  1. China40.7%
  2. United States10.9%
  3. Japan9.3%
Top importers
  1. United States13.3%
  2. Brazil12.6%
  3. China6.6%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Demephion-O is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Demephion-O, based on the data on this page

What is Demephion-O?

Demephion-O is an organic thiophosphate.

What is the CAS number of Demephion-O?

The CAS registry number of Demephion-O is 682-80-4.

What is the molecular formula and weight of Demephion-O?

The molecular formula of Demephion-O is C5H13O3PS2 and its molar mass is 216.26 g/mol.

What is Demephion-O used for?

Known uses and roles of Demephion-O include building blocks in research and laboratory.

Is Demephion-O hazardous?

Demephion-O carries the GHS signal word "Danger". Main hazards: fatal if swallowed, toxic in contact with skin. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Demephion-O?

Demephion-O is usually classified under HS code 293090 (Organo-sulphur compounds, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Demephion-O?

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What is the price of Demephion-O?

Suppliers quote Demephion-O on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Demephion-O

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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