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Heterocyclic building blocks

Trimethylolpropane phosphate

Also known as Etbicyphat, 2,6,7-Trioxa-1-phosphabicyclo[2.2.2]octane, 4-ethyl-, 1-oxide, 4-Ethyl-1-phospha-2,6,7 trioxabicyclo(2.2.2)octane-1-oxide

CAS 1005-93-2Formula C6H11O4PMolar mass 178.12 g/molEC 213-740-6
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Trimethylolpropane phosphate chemical structure, C6H11O4P, CAS 1005-93-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
1005-93-2
Formula
C6H11O4P
Molar mass
178.12 g/mol
EC number
213-740-6
HS code
293499
Category
Heterocyclic building blocks

What is Trimethylolpropane phosphate?

Plain description, key identifiers and synonyms

Trimethylolpropane phosphate is a chemical substance with the molecular formula C6H11O4P and a molar mass of 178.12 g/mol. Its CAS registry number is 1005-93-2. The IUPAC name is 4-ethyl-2,6,7-trioxa-1λ5-phosphabicyclo[2.2.2]octane 1-oxide.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-ethyl-2,6,7-trioxa-1λ5-phosphabicyclo[2.2.2]octane 1-oxide
CAS number
1005-93-2 CAS number cross-checked
EC number
213-740-6
Molecular formula
C6H11O4P
UNII
5ZYS7J5LT3
MDL number
MFCD00043597
InChIKey
BYEFHDZWRALTEN-UHFFFAOYSA-N
InChI
InChI=1S/C6H11O4P/c1-2-6-3-8-11(7,9-4-6)10-5-6/h2-5H2,1H3
SMILES (canonical and isomeric)
CCC12COP(=O)(OC1)OC2

Synonyms

  • Etbicyphat
  • 2,6,7-Trioxa-1-phosphabicyclo[2.2.2]octane, 4-ethyl-, 1-oxide
  • 4-Ethyl-1-phospha-2,6,7 trioxabicyclo(2.2.2)octane-1-oxide
  • 2,6,7-Trioxa-1-phosphabicyclo(2.2.2)octane, 4-ethyl-, 1-oxide
  • 4-ethyl-1-phospha-2,6,7-trioxabicyclo(2.2.2.)octane-1-oxide
  • TMPP-oxide
  • TMPP (phosphate)
  • Ethyl bicyclic phosphate
  • 4-Ethyl-2,6,7-trioxa-1-phosphabicyclo[2.2.2]octane 1-oxide
  • TMP-P
  • Trimethylopropane phosphate
  • Trimethyolpropane phosphate
  • 1,1,1-Trimethylolpropane Phosphate
  • 4-ethyl-2,6,7-trioxa-1lambda5-phosphabicyclo[2.2.2]octane 1-oxide
  • 2-(Hydroxymethyl)-2-ethyl-1,3-propanediol, cyclic phosphate (1:1)
  • 2-Ethyl-2-(hydroxymethyl)-1,3-propanediol, cyclic phosphate (1:1)
  • 4-Ethyl-1-phospha-2,6,7-trioxabicyclo(2.2.2)octane-1-oxide
  • 1,3-Propanediol, 2-ethyl-2-(hydroxymethyl)-, cyclic phosphate
  • 4-Aethyl-1-phospha-2,6,7-trioxabicyclo(2.2.2)octan-1-oxid
  • 4-Ethyl-2,6,7-trioxa-1-phosphabicyclo(2.2.2)octane 1-oxide
  • 2,6,7-Trioxa-1-phosphabicyclo-[2.2.2]octane, 4-ethyl-, 1-oxide
  • 2,6,7-Trioxa-1-phosphabicyclo-(2.2.2)octane, 4-ethyl-, 1-oxide
  • 1-Ethyl-1-phospha-2,6,7-trioxabicyclo(2.2.2)octane 1-oxide
  • 1-Ethyl-1-phospha-2,6,7-trioxabicyclo(2.2.2)octane-1-oxide
  • 4-Ethyl-2,6,7-trioxa-1-phosphabicyclo(2.2.2)octane-1-oxide
Show all 35 synonyms
  • Etbicyphat, >=95% (NMR), solid
  • 1, 2-ethyl-2-(hydroxymethyl)-, cyclic phosphate
  • 1, 2-ethyl-2-(hydroxymethyl)-, cyclic phosphate (1:1)
  • 4-Aethyl-1-phospha-2,7-trioxabicyclo[2.2.2]octan 1-oxid
  • 4-ethyl-2,6,7-trioxa-1-phosphabicyclo[2.2.2]octan-1-one
  • 4-Ethyl-1-phospha-2,7-trioxabicyclo[2.2.2]octane 1-oxide
  • 4-ethyl-2,6,7-trioxa-1-phosphabicy-clo[2.2.2]octane 1-oxide
  • 4-ethyl-2,6,7-trioxa-1|E?-phosphabicyclo[2.2.2]octan-1-one
  • 4-Ethyl-2,7-trioxa-1-phosphabicyclo[2.2.2]octane 1-oxide
  • 2,7-Trioxa-1-phosphabicyclo[2.2.2]octane, 4-ethyl-, 1-oxide

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
178.12 g/molcalc.
Exact mass
178.0395 Dacalc.
LogP (octanol/water)
1.57calc.
Topological polar surface area
44.76 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
1calc.
Heavy atoms
11calc.
Rings
3calc.
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, O=P12OCC(CO1)CO2

O=P12OCC(CO1)CO2

3 rings, 9 atoms, the 2-(Hydroxymethyl)-1,3-propanediol cyclic phosphate (1:1) ring system.

35 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Trimethylolpropane phosphate suppliers

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All 3 suppliers

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3 suppliers in 3 countries

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Trimethylolpropane phosphate price

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

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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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