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

(R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid
(R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid structure
CAS No.
20445-31-2
Chemical Name:
(R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid
Synonyms
Mosher;(+)-MTPA;(R)-(+)-MPTA;MOSHERS ACID;(+)-MOSHER'S ACID;(R)-(+)-Mosher acid;[Optical Resolving];(R)-(+)-MOSHER'S ACID;(R)-(+)-MTPA,(R)-(+)-Mosher'sacid;(+)-A-METHOXY-A-TRIFLUOROMETHYLPHENYLACETIC ACID
CBNumber:
CB7461358
Molecular Formula:
C10H9F3O3
Formula Weight:
234.17
MOL File:
20445-31-2.mol

(R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid Properties

Melting point:
46-49 °C(lit.)
alpha 
D25 +68.5 ± 1.3° (c = 1.49 in CH3OH)
Boiling point:
105-107 °C1 mm Hg(lit.)
Density 
1.344 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.473(lit.)
Flash point:
>230 °F
storage temp. 
2-8°C
solubility 
Soluble in methanol (50 mg/ 1 ml).
pka
1.47±0.10(Predicted)
form 
Crystalline Low Melting Solid
color 
White
Specific Gravity
1.344
optical activity
[α]20/D +73±1°, c = 2% in methanol
Sensitive 
Hygroscopic
Merck 
14,6280
BRN 
2215440
CAS DataBase Reference
20445-31-2(CAS DataBase Reference)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H315-H319-H335
Precautionary statements  P280a-P304+P340-P405-P501a-P261-P305+P351+P338-P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36
WGK Germany  3
3-10
Hazard Note  Irritant/Keep Cold
HazardClass  IRRITANT, HYGROSCOPIC, KEEP COLD
HS Code  29189900

(R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid price More Price(9)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 155268 (R)-(+)-α-Methoxy-α-trifluoromethylphenylacetic acid 99% 20445-31-2 1g $423 2019-12-02 Buy
Sigma-Aldrich 155268 (R)-(+)-α-Methoxy-α-trifluoromethylphenylacetic acid 99% 20445-31-2 5g $614 2019-12-02 Buy
TCI Chemical M0831 (R)-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic Acid [Optical Resolving] >98.0%(GC)(T) 20445-31-2 1g $80 2020-06-24 Buy
TCI Chemical M0831 (R)-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic Acid [Optical Resolving] >98.0%(GC)(T) 20445-31-2 5g $280 2020-06-24 Buy
Alfa Aesar B22968 (R)-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid, 99% 20445-31-2 0.1g $41.9 2020-06-24 Buy

(R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid Chemical Properties,Uses,Production

Chemical Properties

white crystalline low melting solid

Purification Methods

A likely impurity is phenylethylamine from the resolution. Dissolve the acid in Et2O/*benzene (3:1), wash with 0.5N H2SO4, then water, dry over magnesium sulfate, filter, evaporate and distil it. [Dale et al. J Org Chem 34 2543 1969, J Am Chem Soc 75 512 1973.]

(R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid Preparation Products And Raw materials

Raw materials

Preparation Products


(R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid Suppliers

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