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Aromatic building blocks

Trimesitylborane

Also known as tris(2,4,6-trimethylphenyl)borane, Trimesityl boron, Borane,tris(2,4,6-trimethylphenyl)-

CAS 7297-95-2Formula C27H33BMolar mass 368.37 g/mol
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Trimesitylborane chemical structure, C27H33B, CAS 7297-95-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
7297-95-2
Formula
C27H33B
Molar mass
368.37 g/mol
HS code
293190
Category
Aromatic building blocks

What is Trimesitylborane?

Plain description, key identifiers and synonyms

Trimesitylborane is a chemical substance with the molecular formula C27H33B and a molar mass of 368.37 g/mol. Its CAS registry number is 7297-95-2. The IUPAC name is tris(2,4,6-trimethylphenyl)borane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
tris(2,4,6-trimethylphenyl)borane
CAS number
7297-95-2 CAS number cross-checked
Molecular formula
C27H33B
MDL number
MFCD00008539
InChIKey
FXFWLXFJBVILBE-UHFFFAOYSA-N
InChI
InChI=1S/C27H33B/c1-16-10-19(4)25(20(5)11-16)28(26-21(6)12-17(2)13-22(26)7)27-23(8)14-18(3)15-24(27)9/h10-15H,1-9H3
SMILES (canonical and isomeric)
B(C1=C(C=C(C=C1C)C)C)(C2=C(C=C(C=C2C)C)C)C3=C(C=C(C=C3C)C)C

Synonyms

  • tris(2,4,6-trimethylphenyl)borane
  • Trimesityl boron
  • Borane,tris(2,4,6-trimethylphenyl)-
  • Borane, trimesityl-
  • Trimesitylboron~Tris(2,4,6-trimethylphenyl)borane
  • Borane, tris(2,4,6-trimethylphenyl)-
  • Boron trimesityl
  • Trimesitylborane, 97%
  • Borane,4,6-trimethylphenyl)-
  • Fxfwlxfjbvilbe-uhfffaoysa-

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
368.37 g/molcalc.
Exact mass
368.2675 Dacalc.
LogP (octanol/water)
4.98calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
3calc.
Heavy atoms
28calc.
Rings
3calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.33calc.
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, c1ccc(B(c2ccccc2)c2ccccc2)cc1

c1ccc(B(c2ccccc2)c2ccccc2)cc1

3 rings, 19 atoms, the Triphenylborane ring system.

61 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.

Trimesitylborane suppliers

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Trimesitylborane 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 Trimesitylborane is traded under.

HS 2931.90Indicative HS code

Organo-inorganic compounds, other than tetramethyl lead, tetraethyl lead, tributyltin compounds…

World exports in 2024
$3.97B
+5.3% vs 2023, imports $3.93B
2019 to 2024
Top exporters
  1. China28.3%
  2. United States15.6%
  3. Germany15.1%
Top importers
  1. United States14.6%
  2. China13.0%
  3. South Korea8.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Trimesitylborane?

Trimesitylborane is a chemical substance with the molecular formula C27H33B and a molar mass of 368.37 g/mol. Its CAS registry number is 7297-95-2. The IUPAC name is tris(2,4,6-trimethylphenyl)borane.

What is the CAS number of Trimesitylborane?

The CAS registry number of Trimesitylborane is 7297-95-2.

What is the molecular formula and weight of Trimesitylborane?

The molecular formula of Trimesitylborane is C27H33B and its molar mass is 368.37 g/mol.

What is Trimesitylborane used for?

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

Is Trimesitylborane hazardous?

No GHS hazard classification for Trimesitylborane is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Trimesitylborane?

Trimesitylborane is usually classified under HS code 293190 (X. ORGANO-INORGANIC COMPOUNDS, HETEROCYCLIC COMPOUNDS, NUCLEIC ACIDS AND THEIR SALTS…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Trimesitylborane?

Post a free request on CompoundList and suppliers of Trimesitylborane will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Trimesitylborane?

Suppliers quote Trimesitylborane 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 Trimesitylborane

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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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