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Impurities and reference standards

Isomalathion

Also known as (Methoxy(methylthio)phosphinothioyl)butanedioic acid diethyl ester, Butanedioic acid, ((methoxy(methylthio)phosphinothioyl)thio)diethyl ester, ((Methoxy(methylthio)phosphinyl)thio)butanedioic acid diethyl ester

CAS 3344-12-5Formula C10H19O6PS2Molar mass 330.36 g/molEC 109-959-0
GHS signal word: Danger. Pictograms: Acute toxicity (severe)
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Isomalathion chemical structure, C10H19O6PS2, CAS 3344-12-5
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
3344-12-5
Formula
C10H19O6PS2
Molar mass
330.36 g/mol
EC number
109-959-0
HS code
293090
Category
Impurities and reference standards

What is Isomalathion?

Plain description, key identifiers and synonyms

Isomalathion is a chemical substance with the molecular formula C10H19O6PS2 and a molar mass of 330.36 g/mol. Its CAS registry number is 3344-12-5. The IUPAC name is diethyl 2-[methoxy(methylsulfanyl)phosphoryl]sulfanylbutanedioate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
diethyl 2-[methoxy(methylsulfanyl)phosphoryl]sulfanylbutanedioate
CAS number
3344-12-5 CAS number cross-checked
EC number
109-959-0
Molecular formula
C10H19O6PS2
UNII
9XEP5P83AO
InChIKey
LPQDGVLVYVULMX-UHFFFAOYSA-N
InChI
InChI=1S/C10H19O6PS2/c1-5-15-9(11)7-8(10(12)16-6-2)19-17(13,14-3)18-4/h8H,5-7H2,1-4H3
SMILES (canonical and isomeric)
CCOC(=O)CC(C(=O)OCC)SP(=O)(OC)SC

Synonyms

  • (Methoxy(methylthio)phosphinothioyl)butanedioic acid diethyl ester
  • Butanedioic acid, ((methoxy(methylthio)phosphinothioyl)thio)diethyl ester
  • ((Methoxy(methylthio)phosphinyl)thio)butanedioic acid diethyl ester
  • S-(1,2-dicarbethoxyethyl)-O,S-dimethyl phosphorodithioate
  • iso-Malathion
  • S-Methylmalathion
  • diethyl 2-[methoxy(methylsulfanyl)phosphoryl]sulfanylbutanedioate
  • Mercaptosuccinic acid diethyl ester, S-ester with O,S-dimethylphosphorodithioate
  • Succinic acid, mercapto-, diethyl ester, S-ester with O,S-dimethyl phosphorodithioate
  • diethyl 2-{[methoxy(methylsulfanyl)phosphoryl]sulfanyl}butanedioate
  • Malathion impurity A CRS
  • iso-Malathion 100 microg/mL in Hexane
  • Malathion impurity a
  • Diethyl 2-([methoxy(methylsulfanyl)phosphoryl]sulfanyl)succinate #
  • Butanedioic acid, ((methoxy(methylthio)phosphinyl)thio)-, diethyl ester
  • Diethyl (2RS)-2-[(Methoxy)(methylsulfanyl)-S-phosphinothioyl]butanedioate, Isomalathion

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
330.36 g/molcalc.
Exact mass
330.0361 Dacalc.
LogP (octanol/water)
2.72calc.
Topological polar surface area
78.9 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
8calc.
Rotatable bonds
9calc.
Heavy atoms
19calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.8calc.
Formal charge
0calc.
Stereocentres
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

  • H301Toxic if swallowed.
Precautionary statements (7)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • 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

Isomalathion suppliers

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Isomalathion price

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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 Isomalathion 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 Isomalathion is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Isomalathion?

Isomalathion is a chemical substance with the molecular formula C10H19O6PS2 and a molar mass of 330.36 g/mol. Its CAS registry number is 3344-12-5. The IUPAC name is diethyl 2-[methoxy(methylsulfanyl)phosphoryl]sulfanylbutanedioate.

What is the CAS number of Isomalathion?

The CAS registry number of Isomalathion is 3344-12-5.

What is the molecular formula and weight of Isomalathion?

The molecular formula of Isomalathion is C10H19O6PS2 and its molar mass is 330.36 g/mol.

Is Isomalathion hazardous?

Isomalathion carries the GHS signal word "Danger". Main hazards: toxic if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Isomalathion?

Isomalathion 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 Isomalathion?

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What is the price of Isomalathion?

Suppliers quote Isomalathion 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 Isomalathion

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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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