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Merck

299537

Sigma-Aldrich

三氟乙酸

≥99%, for protein sequencing

别名:

TFA

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25 G
$165.00
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$165.00


国内现货,预计发货时间2025年4月14日详情


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25 G
$165.00
50 G
$315.00
100 G
$408.00
500 G
$1,140.00

About This Item

线性分子式:
CF3COOH
CAS号:
分子量:
114.02
Beilstein:
742035
EC 号:
MDL编号:
UNSPSC代码:
12352106
PubChem化学物质编号:
NACRES:
NA.21

$165.00


国内现货,预计发货时间2025年4月14日详情


获取大包装报价

蒸汽密度

3.9 (vs air)

质量水平

蒸汽压

97.5 mmHg ( 20 °C)

类型

for protein sequencing

方案

≥99%

表单

liquid

杂质

<0.05% water

蒸发残留物

<0.005%

折射率

n20/D 1.3 (lit.)

pH值(酸碱度)

1 (20 °C, 10 g/L)

沸点

72.4 °C (lit.)

mp

−15.4 °C (lit.)

密度

1.489 g/mL at 20 °C (lit.)

SMILES字符串

OC(C(F)(F)F)=O

InChI

1S/C2HF3O2/c3-2(4,5)1(6)7/h(H,6,7)

InChI key

DTQVDTLACAAQTR-UHFFFAOYSA-N

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一般描述

三氟乙酸是一种天然存在的有机溶剂,可通过微生物作用进行生物降解。它还可以用作各种有机转化的催化剂,包括溶剂溶解、重排、还原、氧化和三氟甲基化。

应用

三氟乙酸可作为溶剂用于:
  • 质谱法,进行蛋白质鉴定。
  • 微波辐照异恶唑和吡唑与 N-溴琥珀酰亚胺的溴化反应,以合成单溴异恶唑和吡唑。
  • 2-(2-芳基乙基)杂芳酯的路易斯酸催化 6-内双环,以合成杂环内酯。
  • 静电纺丝醋酸纤维素,以制备相应的纳米纤维膜。

象形图

CorrosionExclamation mark

警示用语:

Danger

危险声明

危险分类

Acute Tox. 4 Inhalation - Aquatic Chronic 3 - Eye Dam. 1 - Skin Corr. 1A

储存分类代码

8A - Combustible corrosive hazardous materials

WGK

WGK 2

闪点(°F)

No data available

闪点(°C)

No data available


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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Andrew C Tolonen et al.
Journal of visualized experiments : JoVE, (89)(89), doi:10-doi:10 (2014-07-22)
Stable isotope labeling of peptides by reductive dimethylation (ReDi labeling) is a method to accurately quantify protein expression differences between samples using mass spectrometry. ReDi labeling is performed using either regular (light) or deuterated (heavy) forms of formaldehyde and sodium
Continuous-flow synthesis of the anti-malaria drug artemisinin.
François Lévesque et al.
Angewandte Chemie (International ed. in English), 51(7), 1706-1709 (2012-01-18)
Macro- and micromethods for the determination of serum vitamin A using trifluoroacetic acid.
J B Neeld et al.
The Journal of nutrition, 79, 454-462 (1963-04-01)
Risto Kostiainen et al.
Journal of chromatography. A, 1216(4), 685-699 (2008-09-19)
The most widely used ionization techniques in liquid chromatography-mass spectrometry (LC-MS) are electrospray ionization (ESI), atmospheric pressure chemical ionization (APCI) and atmospheric pressure photoionization (APPI). All three provide user friendly coupling of LC to MS. Achieving optimal LC-MS conditions is
Guangfa Shi et al.
Organic letters, 17(1), 38-41 (2014-12-18)
Direct trifluoromethylation of arenes using TFA as the trifluoromethylating reagent was achieved with Ag as the catalyst. This reaction not only provides a new protocol for aryl C-H trifluoromethylation, but the generation of CF3· from TFA may prove useful in

实验方案

BIOshell™ IgG 1000 Å C4 UHPLC Column for Improved Biomacromolecule Separations

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/449/386/product-dating-information-mk.pdf

      Helpful?

  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

      Helpful?

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