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

(R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid
(R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid
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.)
Boiling point:
105-107 °C1 mm Hg(lit.)
alpha 
D25 +68.5 ± 1.3° (c = 1.49 in CH3OH)
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).
form 
Crystalline Low Melting Solid
color 
White
Sensitive 
Hygroscopic
Merck 
14,6280
BRN 
2215440
CAS DataBase Reference
20445-31-2(CAS DataBase Reference)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
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
Symbol(GHS):
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash hands thoroughly after handling.
P264 Wash skin thouroughly after handling.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

(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 $139 2018-11-13 Buy
Sigma-Aldrich 155268 (R)-(+)-α-Methoxy-α-trifluoromethylphenylacetic acid 99% 20445-31-2 5g $597 2018-11-13 Buy
TCI Chemical M0831 (R)-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic Acid [Optical Resolving] >98.0%(GC)(T) 20445-31-2 1g $77 2018-11-22 Buy
TCI Chemical M0831 (R)-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic Acid [Optical Resolving] >98.0%(GC)(T) 20445-31-2 5g $270 2018-11-22 Buy
Alfa Aesar B22968 (R)-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid, 99% 20445-31-2 500mg $73.5 2018-11-13 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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