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Heterocyclic building blocks

2-Methoxy-1,3,2-dioxaphospholane

Also known as Cyclic ethylene methyl phosphite, Methyl ethylene phosphite, Ethylene diethylphosphoramidite

CAS 3741-36-4Formula C3H7O3PMolar mass 122.06 g/molEC 223-130-1
GHS signal word: Warning. Pictograms: Harmful or irritant
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2-Methoxy-1,3,2-dioxaphospholane chemical structure, C3H7O3P, CAS 3741-36-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
3741-36-4
Formula
C3H7O3P
Molar mass
122.06 g/mol
EC number
223-130-1
HS code
293499
Category
Heterocyclic building blocks

What is 2-Methoxy-1,3,2-dioxaphospholane?

Plain description, key identifiers and synonyms

2-Methoxy-1,3,2-dioxaphospholane is a chemical substance with the molecular formula C3H7O3P and a molar mass of 122.06 g/mol. Its CAS registry number is 3741-36-4.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-methoxy-1,3,2-dioxaphospholane
CAS number
3741-36-4 CAS number cross-checked
EC number
223-130-1
Molecular formula
C3H7O3P
InChIKey
FBOPSFFWGHLLTB-UHFFFAOYSA-N
InChI
InChI=1S/C3H7O3P/c1-4-7-5-2-3-6-7/h2-3H2,1H3
SMILES (canonical and isomeric)
COP1OCCO1

Synonyms

  • Cyclic ethylene methyl phosphite
  • Methyl ethylene phosphite
  • Ethylene diethylphosphoramidite
  • Ethylene diethylamido phosphite
  • O,O-Bis(ethylene)-O-methyl phosphite
  • 2-Methoxy-1,2,3-dioxaphospholane
  • Phosphorous acid, cyclic ethylene methyl ester
  • Ethylene methyl phosphite, (C2H4O2)(MeO)P
  • 1,3,2-Dioxaphospholane, 2-methoxy-
  • 2-Methoxy-1,3,2-dioxafosfolan
  • 4-01-00-02414 (Beilstein Handbook Reference)
  • 1,3,2-Dioxaphospholane, 2-methoxy-(9CI)
  • Methoxyphosphorane
  • 1,3,2-Dioxaphospholane,2-methoxy-
  • 2-Methoxy-[1,3,2]-dioxaphospholane
  • 2-Methoxy-1,2-dioxaphospholane
  • 2-Methoxy-1,3-dioxaphospholane
  • 1,2-Dioxaphospholane, 2-methoxy-

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
122.06 g/molcalc.
Exact mass
122.0133 Dacalc.
LogP (octanol/water)
0.91calc.
Topological polar surface area
27.69 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
1calc.
Heavy atoms
7calc.
Rings
1calc.
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.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1COPO1

C1COPO1

1 ring, 5 atoms.

66 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
Precautionary statements (5)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P301 + P317If swallowed: Get medical help.
  • P330Rinse mouth.
  • 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

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2-Methoxy-1,3,2-dioxaphospholane 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 2-Methoxy-1,3,2-dioxaphospholane is traded under.

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for 2-Methoxy-1,3,2-dioxaphospholane is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about 2-Methoxy-1,3,2-dioxaphospholane, based on the data on this page

What is 2-Methoxy-1,3,2-dioxaphospholane?

2-Methoxy-1,3,2-dioxaphospholane is a chemical substance with the molecular formula C3H7O3P and a molar mass of 122.06 g/mol. Its CAS registry number is 3741-36-4.

What is the CAS number of 2-Methoxy-1,3,2-dioxaphospholane?

The CAS registry number of 2-Methoxy-1,3,2-dioxaphospholane is 3741-36-4.

What is the molecular formula and weight of 2-Methoxy-1,3,2-dioxaphospholane?

The molecular formula of 2-Methoxy-1,3,2-dioxaphospholane is C3H7O3P and its molar mass is 122.06 g/mol.

What is 2-Methoxy-1,3,2-dioxaphospholane used for?

Known uses and roles of 2-Methoxy-1,3,2-dioxaphospholane include building blocks in research and laboratory and screening compounds in research and laboratory.

Is 2-Methoxy-1,3,2-dioxaphospholane hazardous?

2-Methoxy-1,3,2-dioxaphospholane carries the GHS signal word "Warning". Main hazards: harmful if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of 2-Methoxy-1,3,2-dioxaphospholane?

2-Methoxy-1,3,2-dioxaphospholane is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclic…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy 2-Methoxy-1,3,2-dioxaphospholane?

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What is the price of 2-Methoxy-1,3,2-dioxaphospholane?

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Guides for buyers

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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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