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155268

(R)-(+)-α-Methoxy-α-trifluoromethylphenylacetic acid

99%

Synonym(s):

(+)-MTPA, Mosher’s acid

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About This Item

Linear Formula:
C6H5C(OCH3)(CF3)CO2H
CAS Number:
20445-31-2
Molecular Weight:
234.17
UNSPSC Code:
12352112
NACRES:
NA.22
PubChem Substance ID:
24849508
EC Number:
243-829-5
Beilstein/REAXYS Number:
3591560
MDL number:
MFCD00004184
Assay:
99%
Form:
solid
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Quality Segment

100

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

SMILES string

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 key

JJYKJUXBWFATTE-SECBINFHSA-N

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.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Other Notes

doi:10.1038/nprot.2007.354

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pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

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

target_organs

Respiratory system

Storage Class

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

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