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Aliphatic and alicyclic building blocks

Pinacolborane

Also known as 4,4,5,5-Tetramethyl-1,3,2-dioxaborolane, 1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-, Pinacol Borane

CAS 25015-63-8Formula C6H12BO2Molar mass 126.97 g/molEC 607-485-3
GHS signal word: Danger. Pictograms: Flammable, Corrosive, Harmful or irritant 16 suppliers listed
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Pinacolborane chemical structure, C6H12BO2, CAS 25015-63-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
25015-63-8
Formula
C6H12BO2
Molar mass
126.97 g/mol
EC number
607-485-3
HS code
292090
Category
Aliphatic and alicyclic building blocks

What is Pinacolborane?

Plain description, key identifiers and synonyms

Pinacolborane is a chemical substance with the molecular formula C6H12BO2 and a molar mass of 126.97 g/mol. Its CAS registry number is 25015-63-8.

Identifiers

Registry numbers, names and line notations, tap to copy

CAS number
25015-63-8 CAS number cross-checked
EC number
607-485-3
Molecular formula
C6H12BO2
UNII
BA5Z9NE6HM
MDL number
MFCD00674030
InChIKey
LZPWAYBEOJRFAX-UHFFFAOYSA-N
InChI
InChI=1S/C6H12BO2/c1-5(2)6(3,4)9-7-8-5/h1-4H3
SMILES (canonical and isomeric)
[B]1OC(C(O1)(C)C)(C)C

Synonyms

  • 4,4,5,5-Tetramethyl-1,3,2-dioxaborolane
  • 1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-
  • Pinacol Borane
  • boronic acid pinacol ester
  • Hbpin
  • Pinacolatoborane
  • Pinacolborane, 1.0M in THF
  • 4,4,5,5-tetramethyl-1,3,2$l^{2}
  • 4,4,5,5-tetramethyl-1,3,2-dioxaborolan
  • 4,4,5,5 tetramethyl-1,3,2 dioxaborolane
  • 4,4,5,5-tetramethyl-[1,3,2]dioxaborolan
  • 4,4,5,5-Tetramethyl-[1,3,2]dioxaborolane
  • 4,4,5,5-tetramethyl-[1,3,2]-dioxaborolane
  • 4,4,5,5,-tetramethyl-[1,3,2]-dioxaborolane
  • 4,4,5,5-tetramethyl-1,3,2lambda2-dioxaborolane
  • 4,4,5,5-Tetramethyl-1,3,2-dioxaborolane, 97%
  • 4,4,5,5-Tetramethyl-1,3,2-dioxaborolane, 4,4,5,5-Tetramethyl-1,3,2-dioxaborolane, Pinacolatoborane,

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
126.97 g/molcalc.
Exact mass
127.093 Dacalc.
LogP (octanol/water)
1.12calc.
Topological polar surface area
18.46 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
9calc.
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, [B]1OCCO1

[B]1OCCO1

1 ring, 5 atoms, the C2H4BO2 ring system.

7 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H220Extremely flammable gas.
  • H225Highly flammable liquid and vapour.
  • H260In contact with water releases flammable gases which may ignite spontaneously.
  • H261In contact with water releases flammable gas.
  • H315Causes skin irritation.
  • H318Causes serious eye damage.
Precautionary statements (28)
  • P203Obtain, read and follow all safety instructions before use.
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P222Do not allow contact with air.
  • P223Do not allow contact with water.
  • P231 + P232Handle and store contents under inert gas. Protect from moisture.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P335 + P334If on skin: Brush off loose particles from skin. Immerse in cool water or wrap in wet bandages.
  • P302 + P352If on skin: Wash with plenty of water.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P377Leaking gas fire: do not extinguish, unless leak can be stopped safely.
  • P381In case of leakage, eliminate all ignition sources.
  • P402 + P404Store in a dry place. Store in a closed container.
  • P403Store in a well-ventilated place.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • 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

Pinacolborane suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 16 suppliers
16 of 16 offers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

16 suppliers in 4 countries

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Pinacolborane price

Indicative price range per kg from live supplier offers

No published prices right now

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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 Pinacolborane is traded under.

HS 2920.90Indicative HS code

Esters, other than thiophosphoric esters (phosphorothioates) and phosphite esters and their salts…

World exports in 2024
$1.05B
+8.0% vs 2023, imports $1.23B
2019 to 2024
Top exporters
  1. China33.4%
  2. Germany18.8%
  3. United States12.4%
Top importers
  1. United States19.2%
  2. Singapore8.9%
  3. South Korea6.9%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Pinacolborane?

Pinacolborane is a chemical substance with the molecular formula C6H12BO2 and a molar mass of 126.97 g/mol. Its CAS registry number is 25015-63-8.

What is the CAS number of Pinacolborane?

The CAS registry number of Pinacolborane is 25015-63-8.

What is the molecular formula and weight of Pinacolborane?

The molecular formula of Pinacolborane is C6H12BO2 and its molar mass is 126.97 g/mol.

What is Pinacolborane used for?

Known uses and roles of Pinacolborane include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Pinacolborane hazardous?

Pinacolborane carries the GHS signal word "Danger". Main hazards: extremely flammable gas, highly flammable liquid and vapour, in contact with water releases flammable gases which may ignite spontaneously. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Pinacolborane?

Pinacolborane is usually classified under HS code 292090 (Esters of other inorganic acids of non-metals (excluding esters of hydrogen halides) and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pinacolborane?

CompoundList lists 16 suppliers of Pinacolborane in China, United States, Australia and India. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Pinacolborane in India?

1 supplier in India list Pinacolborane on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Pinacolborane?

Suppliers quote Pinacolborane 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 Pinacolborane

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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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