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Merck

155268

Sigma-Aldrich

(R)-(+)-α-甲氧基-α-三氟甲基苯乙酸

99%

别名:

(+)-MTPA, Mosher 酸

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About This Item

线性分子式:
C6H5C(OCH3)(CF3)CO2H
CAS号:
分子量:
234.17
Beilstein:
3591560
EC號碼:
MDL號碼:
分類程式碼代碼:
12352112
PubChem物質ID:
NACRES:
NA.22

化驗

99%

形狀

solid

光學活性

[α]20/D +72°, c = 1.6 in methanol

光學純度

ee: 99% (GLC)

折射率

n20/D 1.473 (lit.)

bp

105-107 °C/1 mmHg (lit.)

mp

46-49 °C (lit.)

密度

1.344 g/mL at 25 °C (lit.)

官能基

carboxylic acid
ether
fluoro
phenyl

儲存溫度

2-8°C

SMILES 字串

CO[C@@](C(O)=O)(c1ccccc1)C(F)(F)F

InChI

1S/C10H9F3O3/c1-16-9(8(14)15,10(11,12)13)7-5-3-2-4-6-7/h2-6H,1H3,(H,14,15)/t9-/m1/s1

InChI 密鑰

JJYKJUXBWFATTE-SECBINFHSA-N

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應用

(R)-(+)-α-Methoxy-α-trifluoromethylphenylacetic acid is commonly used as a derivatizing agent in Mosher ester analysis, an NMR-based method for determining the absolute configuration of the chiral carbon center in a secondary alcohol.

包裝

Bottomless glass bottle. Contents are inside inserted fused cone.

其他說明

doi:10.1038/nprot.2007.354

象形圖

Exclamation mark

訊號詞

Warning

危險聲明

危險分類

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

標靶器官

Respiratory system

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

235.4 °F - closed cup

閃點(°C)

113 °C - closed cup

個人防護裝備

dust mask type N95 (US), Eyeshields, Gloves


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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Lidia De Luca et al.
The Journal of organic chemistry, 72(10), 3955-3957 (2007-04-11)
An effective route to chiral optically active 2-substituted benzofurans directly from carboxylic acids is reported. This procedure, which allows the preparation of alpha-alkyl-2-benzofuranmethanamines from N-protected alpha-amino acids without sensible racemization phenomena, proceeds in good yields under mild conditions with the
Tetrahedron Asymmetry, 18, 975-975 (2007)
Mosher ester analysis for the determination of absolute configuration of stereogenic (chiral) carbinol carbons.
Hoye TR, et al.
Nature Protocols, 2(10), 2451-2458 (2007)
Thomas R Hoye et al.
Organic letters, 12(8), 1768-1771 (2010-03-27)
The relative magnitudes of the chemical shift differences (Deltadeltas) in the two diastereomers of menthyl esters of known chiral derivatizing agents (CDAs) were compared to those of the alpha-methoxy-alpha-trifluoromethyl-1-naphthylacetyl (MTN((1))A) analogues I. Discrimination of the terminal diastereotopic methyl resonances in
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