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(R)-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid, 99% - CAS 20445-31-2 - Formula C10H9F3O3

B22968 20445-31-2 (R)-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid, 99% (+)-Mosher's acid (+)-MTPA Alfa Aesar


Certificate of Analysis

(R)-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid, 99%

CAS: 20445-31-2 MDL: MFCD00004184  EINECS: 243-829-5
Not regulated for shipping
Alternate Name: (+)-Mosher's acid


Pricing and Availability

Size ($) Price Your Price Quantity Options Availability
0.1g 39.40 Check Availability Add to Favorites Enter qty and click checkbox
500mg 71.40 Check Availability Add to Favorites Enter qty and click checkbox

Chemical Properties

Formula: C10H9F3O3  Density: 1.344
Formula weight: 234.18  Refractive Index: 1.4730
Melting point: 43-45° Optical Rotation: +72° (c=2 in methanol)
Boiling point: 105-107°/1mm Sensitivity: Hygroscopic
Flash point: >110°(230°F) 

Literature References

Widely used reagent for determination of optical purities of alcohols and amines by 1H or 19F NMR: J. Org. Chem., 34, 2453 (1969).

Other References

Merck: 14,6280
Beilstein: 2215440
Harmonized Tariff Code: 2918.99

GHS Hazard and Precautionary Statements

Hazard Statements : H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements : P261-P280-P305+P351+P338-P304+P340-P405-P501A

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Harmful or Irritant

Risk & Safety

Risk Phrases: 36/37/38
Irritating to eyes, respiratory system and skin.
Safety Phrases: 26-37
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable gloves.