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155195

N,O-Bis(trimethylsilyl)trifluoroacetamide

≥99%

Synonym(s):

BSTFA

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Size/SKUAvailabilityPrice
5 g
Please contact Customer Service for Availability
1 860,00 CZK
25 g
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8 140,00 CZK
100 g
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13 400,00 CZK

About This Item

Linear Formula:
CF3C[=NSi(CH3)3]OSi(CH3)3
CAS Number:
Molecular Weight:
257.40
UNSPSC Code:
12352111
NACRES:
NA.22
PubChem Substance ID:
EC Number:
247-103-9
Beilstein/REAXYS Number:
2050024
MDL number:
Assay:
≥99%
Form:
liquid

1 860,00 CZK


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grade

synthesis grade

Quality Segment

assay

≥99%

form

liquid

reaction suitability

reactivity: alcohol reactive, reactivity: amine reactive, reagent type: protection reagent

refractive index

n20/D 1.384 (lit.)

bp

45-50 °C/14 mmHg (lit.)

density

0.969 g/mL at 25 °C (lit.)

functional group

fluoro

SMILES string

C[Si](C)(C)O\C(=N\[Si](C)(C)C)C(F)(F)F

InChI

1S/C8H18F3NOSi2/c1-14(2,3)12-7(8(9,10)11)13-15(4,5)6/h1-6H3/b12-7+

InChI key

XCOBLONWWXQEBS-KPKJPENVSA-N

General description

N,O-Bis(trimethylsilyl)trifluoroacetamide is an organosilicon reagent for trimethylsilylation, deprotection, dehydrogenation, allylic alkylation, nitronate formation, and Claisen rearrangement.

BSTFA is a silylating agent used in the synthesis of 4-Quinolones.

Application

N,O-Bis(trimethylsilyl)trifluoroacetamide can be used as a derivatization reagent for the determination of the estrogens estrone and 17α-ethinylestradiol by gas chromatography-mass spectrometry.

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152221520915238
description

≥99%

description

derivatization grade (GC derivatization), LiChropur, ≥99.0%

description

derivatization grade (GC derivatization), LiChropur, contains 10% TMCS, 98% (excluding TMCS)

description

derivatization grade (GC derivatization), LiChropur, contains 1% TMCS, 99% (excluding TMCS)

assay

≥99%

assay

≥99.0%, ≥99.0% (GC)

assay

98% (excluding TMCS), ≥97.5% (excluding TMCS, GC)

assay

99% (excluding TMCS), ≥98.5% (excluding chlorotrimethylsilane, GC)

reaction suitability

reagent type: protection reagent, reactivity: amine reactive, reactivity: alcohol reactive

reaction suitability

reagent type: derivatization reagent
reaction type: Silylations

reaction suitability

reagent type: derivatization reagent
reaction type: Silylations

reaction suitability

reagent type: derivatization reagent
reaction type: Silylations

Quality Level

200

Quality Level

100

Quality Level

100

Quality Level

100

density

0.969 g/mL at 25 °C (lit.)

density

0.969 g/mL at 25 °C (lit.)

density

0.97 g/mL (lit.)

density

0.97 g/mL (lit.)

refractive index

n20/D 1.384 (lit.)

refractive index

n20/D 1.384

refractive index

n20/D 1.384 (lit.)

refractive index

n20/D 1.384 (lit.)

form

liquid

form

liquid

form

liquid

form

liquid


pictograms

FlameExclamation mark

signalword

Warning

Hazard Classifications

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

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

93.2 °F

flash_point_c

34 °C

ppe

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



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Questions

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  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?

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