[1,1':3',1''-terphenyl]-5'-yl-boronic acid (CAS 128388-54-5)
[1,1':3',1''-terphenyl]-5'-yl-boronic acid
![[1,1':3',1''-terphenyl]-5'-yl-boronic acid structure](/wp-content/uploads/products/structures/cas-128388-54-5.png)
| CAS No. | 128388-54-5 |
|---|---|
| Synonyms | [1,1′:3′,1”-terphenyl]-5′-yl-boronic acid; (3,5-diphenylphenyl)boronic acid |
| Category | Boronic Acid / Boronic acid |
| Assay / Purity | 99% |
| Molecular Formula | C18H15BO2 |
| Molecular Weight | 274.12 |
| Melting Point | 292-296 °C |
| Boiling Point | 513.0 °C (predicted) |
| Density | 1.21 g/cm³ (predicted) |
| Flash Point | Not applicable (solid) |
| Appearance | Off-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
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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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Request a QuoteReference: CAS 128388-54-5 · PubChem CID 14739363