155268
(R)-(+)-α-甲氧基-α-三氟甲基苯乙酸
99%
别名:
(+)-MTPA, Mosher 酸
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线性分子式:
C6H5C(OCH3)(CF3)CO2H
化学文摘社编号:
分子量:
234.17
UNSPSC Code:
12352112
NACRES:
NA.22
PubChem Substance ID:
EC Number:
243-829-5
Beilstein/REAXYS Number:
3591560
MDL number:
产品名称
(R)-(+)-α-甲氧基-α-三氟甲基苯乙酸, 99%
InChI key
JJYKJUXBWFATTE-SECBINFHSA-N
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
SMILES string
CO[C@@](C(O)=O)(c1ccccc1)C(F)(F)F
assay
99%
form
solid
optical activity
[α]20/D +72°, c = 1.6 in methanol
optical purity
ee: 99% (GLC)
refractive index
n20/D 1.473 (lit.)
bp
105-107 °C/1 mmHg (lit.)
mp
46-49 °C (lit.)
density
1.344 g/mL at 25 °C (lit.)
functional group
carboxylic acid
ether
fluoro
phenyl
storage temp.
2-8°C
Quality Level
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Application
(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.
Other Notes
doi:10.1038/nprot.2007.354
Packaging
Bottomless glass bottle. Contents are inside inserted fused cone.
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
存储类别
11 - Combustible Solids
wgk
WGK 3
flash_point_f
235.4 °F - closed cup
flash_point_c
113 °C - closed cup
ppe
dust mask type N95 (US), Eyeshields, Gloves
Tetrahedron Asymmetry, 18, 975-975 (2007)
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
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)
J Martín Torres-Valencia et al.
Phytochemical analysis : PCA, 13(6), 329-332 (2002-12-24)
A method to determine the absolute configuration of 2,3-epoxy-2-methylbutanoate ester residues in natural products is presented, based on (i) the reduction of the ester function to yield a 2-methyl-1,2-butanediol, (ii) esterification of the obtained primary alcohol with either (R)-(+)- or
Barry J Everitt et al.
Nature neuroscience, 8(11), 1481-1489 (2005-10-28)
Drug addiction is increasingly viewed as the endpoint of a series of transitions from initial drug use--when a drug is voluntarily taken because it has reinforcing, often hedonic, effects--through loss of control over this behavior, such that it becomes habitual
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