[1,1':3',1''-terphenyl]-5'-yl-boronic acid (CAS 128388-54-5)

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[1,1':3',1''-terphenyl]-5'-yl-boronic acid

CAS No. 128388-54-5
3,5-二苯基苯硼酸
[1,1':3',1''-terphenyl]-5'-yl-boronic acid structure
Chemical structure
CAS No.128388-54-5
Synonyms[1,1′:3′,1”-terphenyl]-5′-yl-boronic acid; (3,5-diphenylphenyl)boronic acid
CategoryBoronic Acid / Boronic acid
Assay / Purity99%
Molecular FormulaC18H15BO2
Molecular Weight274.12
Melting Point292-296 °C
Boiling Point513.0 °C (predicted)
Density1.21 g/cm³ (predicted)
Flash PointNot applicable (solid)
AppearanceOff-white to white solid powder

Application and positioning

Two phenyl rings flank the boronic acid, so the terphenyl unit shields the coupling centre on both sides. It is used where a bulky aryl group is needed to suppress aggregation or to raise the glass transition temperature of an OLED layer. Laurand supplies it from audited Chinese producers in kilogram to multi-tonne lots, with the documentation your market requires.

Quality and documentation

  • Batch-specific Certificate of Analysis with HPLC purity and water content by Karl Fischer
  • Anhydride content reported per lot, since arylboronic acids equilibrate with their anhydride form
  • SDS in the language of your market, with GHS classification for the destination
  • Pre-shipment sample for laboratory approval on first orders

Packaging and handling

  • 1 kg, 5 kg and 25 kg fibre drums with inner PE liner; pack size confirmed at quotation
  • Sealed, dry and protected from light — moisture uptake and oxidation are the main degradation routes
  • Store at ambient temperature in a dry warehouse, away from oxidising agents

Related products

Values marked (predicted) are calculated estimates; the remaining data are published literature values. The specification of the delivered lot is confirmed with the quotation.

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Reference: CAS 128388-54-5 · PubChem CID 14739363