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417149

2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

97%

Synonym(s):

4,4,5,5-Tetramethyl-2-[(propan-2-yl)oxy]-1,3,2-dioxaborolane, Isopropoxy 4,4,5,5-tetramethyl-1,3,2-dioxaborolane, Isopropoxyboronic acid pinacol ester, Isopropyl pinacol borate, Isopropylpinacolylborate

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5 mL
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$61.10
$45.82
25 mL
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$103.00
100 mL
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$277.00
500 mL
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$822.00
$616.50

About This Item

Empirical Formula (Hill Notation):
C9H19BO3
CAS Number:
Molecular Weight:
186.06
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12352103
MDL number:

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Quality Segment

assay

97%

form

liquid

refractive index

n20/D 1.409 (lit.)

bp

73 °C/15 mmHg (lit.)

density

0.912 g/mL at 25 °C (lit.)

SMILES string

CC(C)OB1OC(C)(C)C(C)(C)O1

InChI

1S/C9H19BO3/c1-7(2)11-10-12-8(3,4)9(5,6)13-10/h7H,1-6H3

InChI key

MRWWWZLJWNIEEJ-UHFFFAOYSA-N

Application

2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane can be used as a reagent to borylate arenes and to prepare fluorenylborolane.

It can also be used in the synthesis of following intermediates for generating conjugated copolymers:
  • 9,9-Dioctyl-2,7-bis(4,4,5,5-tetramethyl1,3,2-dioxaborolane-2-yl)dibenzosilole.
  • 3,9-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,11-di(1-decylundecyl)indolo[3,2-b]carbazole.
  • 2,7-Bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9,9-dioctylfluorene.
  • 2,7-Bis(4′,4′,5′,5′-tetramethyl-1′,3′,2′-dioxaborolan-2′-yl)-N-9′′-heptadecanylcarbazole.

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description

97%

description

contains BHT as stabilizer, 94.5%

description

96%

description

97%

assay

97%

assay

94.5%

assay

96%

assay

97%

density

0.912 g/mL at 25 °C (lit.)

density

0.894 g/mL at 25 °C

density

0.922 g/mL at 25 °C

density

0.896 g/mL at 25 °C (lit.)

refractive index

n20/D 1.409 (lit.)

refractive index

n20/D 1.4320

refractive index

n20/D 1.433

refractive index

n20/D 1.4268 (lit.)

bp

73 °C/15 mmHg (lit.)

bp

47-49 °C/9 mbar

bp

146 °C

bp

50-53 °C/5 mmHg (lit.)

form

liquid

form

-

form

-

form

-

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100


pictograms

FlameExclamation mark

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

109.4 °F - closed cup

flash_point_c

43 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter



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Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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