(R)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid

It appears as a white crystalline solid, sparingly soluble in water but soluble in organic solvents such as chloroform, methanol, and ether. (R)-α-Methoxy-α-(trifluoromethyl)phenylacetic acid (often known as (R)-MTPA or (R)-Mosher’s acid) is a chiral carboxylic acid widely used in stereochemical analysis and asymmetric synthesis.

CAS No 20445-31-2
Molecular Formula C10H9F3O3
Molecular Weight 234.17 g/mol
Synonyms (2R)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoic acid

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