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Aliphatic and alicyclic building blocks

Demephion

Also known as Demefion, Phosphorothioic acid, O,O-dimethyl O-(2-(methylthio)ethyl) ester, mixt. with O,O-dimethyl S-(2-(methylthio)ethyl) phosphorothioate, Demephion (bsi)

CAS 8065-62-1Formula C10H26O6P2S4Molar mass 432.53 g/molEC 693-045-6
GHS signal word: Danger. Pictograms: Acute toxicity (severe)
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Demephion chemical structure, C10H26O6P2S4, CAS 8065-62-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
8065-62-1
Formula
C10H26O6P2S4
Molar mass
432.53 g/mol
EC number
693-045-6
HS code
293090
Category
Aliphatic and alicyclic building blocks

What is Demephion?

Plain description, key identifiers and synonyms

Demephion is a chemical substance with the molecular formula C10H26O6P2S4 and a molar mass of 432.53 g/mol. Its CAS registry number is 8065-62-1. The IUPAC name is dimethoxy-(2-methylsulfanylethoxy)-sulfanylidene-λ5-phosphane, 1-dimethoxyphosphorylsulfanyl-2-methylsulfanylethane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dimethoxy-(2-methylsulfanylethoxy)-sulfanylidene-λ5-phosphane, 1-dimethoxyphosphorylsulfanyl-2-methylsulfanylethane
CAS number
8065-62-1 CAS number cross-checked
EC number
693-045-6
Molecular formula
C10H26O6P2S4
UNII
P9BT644GPL
InChIKey
ZIBCESDMUREVIU-UHFFFAOYSA-N
InChI
InChI=1S/2C5H13O3PS2/c1-7-9(6,8-2)11-5-4-10-3;1-6-9(10,7-2)8-4-5-11-3/h2*4-5H2,1-3H3
SMILES (canonical and isomeric)
COP(=O)(OC)SCCSC.COP(=S)(OC)OCCSC

Synonyms

  • Demefion
  • Phosphorothioic acid, O,O-dimethyl O-(2-(methylthio)ethyl) ester, mixt. with O,O-dimethyl S-(2-(methylthio)ethyl) phosphorothioate
  • Demephion (bsi)
  • Demephion (O&S)

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
432.53 g/molcalc.
Exact mass
432.0087 Dacalc.
LogP (octanol/water)
4.37calc.
Topological polar surface area
63.22 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
10calc.
Rotatable bonds
12calc.
Heavy atoms
22calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.
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.
  • H412Harmful to aquatic life with long lasting effects.
Precautionary statements (8)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P273Avoid release to the environment.
  • P301 + P316If swallowed: Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • 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 suppliers

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Demephion 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

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Demephion 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 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Demephion?

Demephion is a chemical substance with the molecular formula C10H26O6P2S4 and a molar mass of 432.53 g/mol. Its CAS registry number is 8065-62-1. The IUPAC name is dimethoxy-(2-methylsulfanylethoxy)-sulfanylidene-λ5-phosphane, 1-dimethoxyphosphorylsulfanyl-2-methylsulfanylethane.

What is the CAS number of Demephion?

The CAS registry number of Demephion is 8065-62-1.

What is the molecular formula and weight of Demephion?

The molecular formula of Demephion is C10H26O6P2S4 and its molar mass is 432.53 g/mol.

What is Demephion used for?

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

Is Demephion hazardous?

Demephion carries the GHS signal word "Danger". Main hazards: fatal if swallowed, harmful to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Demephion?

Demephion 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?

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What is the price of Demephion?

Suppliers quote Demephion 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

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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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