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ChemicalBook >> CAS DataBase List >> 4,4,5,5-Tetramethyl-2-[2-[(trimethylsilyl)ethynyl]phenyl]-1,3,2-dioxaborolane

4,4,5,5-Tetramethyl-2-[2-[(trimethylsilyl)ethynyl]phenyl]-1,3,2-dioxaborolane

4,4,5,5-Tetramethyl-2-[2-[(trimethylsilyl)ethynyl]phenyl]-1,3,2-dioxaborolane price.
  • $31 - $1089.66
  • Product name: 4,4,5,5-Tetramethyl-2-[2-[(trimethylsilyl)ethynyl]phenyl]-1,3,2-dioxaborolane
  • CAS: 1218790-52-3
  • MF: C17H25BO2Si
  • MW: 300.28
  • EINECS:
  • MDL Number:MFCD11656083
  • Synonyms:2-[(Trimethylsilyl)ethynyl]phenylboronic acid pinacol ester;4,4,5,5-Tetramethyl-2-[2-[(trimethylsilyl)ethynyl]phenyl]-1,3,2-dioxaborolane;trimethyl(2-(2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane;2-[(Trimethylsilyl)ethynyl]phenylboronic acid pinacol ester 97%;1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-2-[2-[2-(trimethylsilyl)ethynyl]phenyl]-;Trimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane
16 prices
Selected condition：
Brand
  • aablocks
  • ACHEMBLOCK
  • Alichem
  • American Custom Chemicals Corporation
  • Crysdot
  • Matrix Scientific
Package
  • 100.00mg
  • 100mg
  • 250.00mg
  • 250mg
  • 1.00g
  • 1g
  • 5G
  • Manufactureraablocks
  • Product numberAA001670
  • Product descriptionTrimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+%
  • Packaging100mg
  • Price$31
  • Updated2026-05-21
  • Buy
  • Manufactureraablocks
  • Product numberAA001670
  • Product descriptionTrimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+%
  • Packaging100mg
  • Price$31
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA001670
  • Product descriptionTrimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+%
  • Packaging250mg
  • Price$75
  • Updated2026-05-21
  • Buy
  • Manufactureraablocks
  • Product numberAA001670
  • Product descriptionTrimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+%
  • Packaging1g
  • Price$205
  • Updated2026-05-21
  • Buy
  • Manufactureraablocks
  • Product numberAA001670
  • Product descriptionTrimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+%
  • Packaging1g
  • Price$205
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA001670
  • Product descriptionTrimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+%
  • Packaging250mg
  • Price$75
  • Updated2026-05-28
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberAD239594
  • Product description1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-2-[2-[2-(trimethylsilyl)ethynyl]phenyl]- 95%
  • Packaging1G
  • Price$275
  • Updated2026-05-27
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberAD239594
  • Product description1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-2-[2-[2-(trimethylsilyl)ethynyl]phenyl]- 95%
  • Packaging250MG
  • Price$100
  • Updated2026-05-27
  • Buy
  • ManufacturerACHEMBLOCK
  • Product numberAD239594
  • Product description1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-2-[2-[2-(trimethylsilyl)ethynyl]phenyl]- 95%
  • Packaging5G
  • Price$835
  • Updated2026-05-27
  • Buy
  • ManufacturerAlichem
  • Product number1218790523
  • Product descriptionTrimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane
  • Packaging5g
  • Price$405.01
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberBOR0002790
  • Product description2-[(TRIMETHYLSILYL)ETHYNYL]PHENYLBORONIC ACID PINACOL ESTER 95.00%
  • Packaging5G
  • Price$1089.66
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberBOR0002790
  • Product description2-[(TRIMETHYLSILYL)ETHYNYL]PHENYLBORONIC ACID PINACOL ESTER 95.00%
  • Packaging1G
  • Price$374.85
  • Updated2021-12-16
  • Buy
  • ManufacturerCrysdot
  • Product numberCD42001689
  • Product descriptionTrimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+%
  • Packaging5g
  • Price$491
  • Updated2026-05-27
  • Buy
  • ManufacturerMatrix Scientific
  • Product number310528
  • Product descriptionTrimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane
  • Packaging100.00mg
  • Price$67
  • Updated2026-05-19
  • Buy
  • ManufacturerMatrix Scientific
  • Product number310528
  • Product descriptionTrimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane
  • Packaging1.00g
  • Price$289
  • Updated2026-05-19
  • Buy
  • ManufacturerMatrix Scientific
  • Product number310528
  • Product descriptionTrimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane
  • Packaging250.00mg
  • Price$112
  • Updated2026-05-19
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA001670 Trimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+% 100mg $31 2026-05-21 Buy
aablocks AA001670 Trimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+% 100mg $31 2026-05-28 Buy
aablocks AA001670 Trimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+% 250mg $75 2026-05-21 Buy
aablocks AA001670 Trimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+% 1g $205 2026-05-21 Buy
aablocks AA001670 Trimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+% 1g $205 2026-05-28 Buy
aablocks AA001670 Trimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+% 250mg $75 2026-05-28 Buy
ACHEMBLOCK AD239594 1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-2-[2-[2-(trimethylsilyl)ethynyl]phenyl]- 95% 1G $275 2026-05-27 Buy
ACHEMBLOCK AD239594 1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-2-[2-[2-(trimethylsilyl)ethynyl]phenyl]- 95% 250MG $100 2026-05-27 Buy
ACHEMBLOCK AD239594 1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-2-[2-[2-(trimethylsilyl)ethynyl]phenyl]- 95% 5G $835 2026-05-27 Buy
Alichem 1218790523 Trimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 5g $405.01 2021-12-16 Buy
American Custom Chemicals Corporation BOR0002790 2-[(TRIMETHYLSILYL)ETHYNYL]PHENYLBORONIC ACID PINACOL ESTER 95.00% 5G $1089.66 2021-12-16 Buy
American Custom Chemicals Corporation BOR0002790 2-[(TRIMETHYLSILYL)ETHYNYL]PHENYLBORONIC ACID PINACOL ESTER 95.00% 1G $374.85 2021-12-16 Buy
Crysdot CD42001689 Trimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 95+% 5g $491 2026-05-27 Buy
Matrix Scientific 310528 Trimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 100.00mg $67 2026-05-19 Buy
Matrix Scientific 310528 Trimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 1.00g $289 2026-05-19 Buy
Matrix Scientific 310528 Trimethyl((2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethynyl)silane 250.00mg $112 2026-05-19 Buy

Properties

Density :0.959 g/mL at 25 °C
refractive index :n20/D 1.514
Flash point :110 °C
storage temp. :2-8°C

Safety Information

Symbol(GHS): Exclamation Mark (GHS07)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H332 Harmful if inhaled Acute toxicity,inhalation Category 4 Warning P261, P271, P304+P340, P312
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P310 Immediately call a POISON CENTER or doctor/physician.

Description

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