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B22968 (R)-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid, 99%

CAS Number
20445-31-2
Synonyms
(+)-Mosher's acid
(+)-MTPA

Stock No. Size Price ($) Quantity Availability
B22968-77 0.1g 40.70
B22968-ME 500mg 76.20
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(R)-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid, 99%

MDL
MFCD00004184
EINECS
243-829-5

Chemical Properties

Formula
C10H9F3O3
Formula Weight
234.18
Melting point
43-45°
Boiling Point
105-107°/1mm
Flash Point
>110°(230°F)
Density
1.344
Refractive Index
1.4730
Storage & Sensitivity
Keep Cold. Hygroscopic.
Solubility
Soluble in methanol (50 mg/ 1 ml).

Applications

(R)-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid is widely used reagent for determination of optical purities of alcohols and amines by 1H or 19F NMR.

Notes

Hygroscopic. Store under inert gas. Store away from oxidizing agents, moisture.

Literature References

Frank J. VillaniJr.; Michael J. Costanzo; Ruth R. Inners; Martin S. Mutter; David E. McClure. Determination of enantiomeric purity of tertiary amines by proton NMR of .alpha.-methoxy-.alpha.-(trifluoromethyl)phenylacetic acid complexes. J. Org. Chem. 1986, 51 (19), 3715-3718.

Soonsin S. Oh; William M. Butler; Masato Koreeda. Nonempirical confirmations of the absolute configuration of (+)-.alpha.-methoxy-.alpha.-(trifluoromethyl)phenylacetic acid. J. Org. Chem. 1989, 54 (19), 4499-4503.

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

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

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

Precautionary Statements: P261-P264b-P271-P280-P302+P352-P304+P340-P305+P351+P338-P312-P332+P313-P337+P313-P362-P501c

Avoid breathing dust/fume/gas/mist/vapours/spray. Wash face, hands and any exposed skin thoroughly after handling Use only outdoors or in a well-ventilated area. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Call a POISON CENTER or doctor/physician if you feel unwell. If skin irritation occurs: Get medical advice/attention. If eye irritation persists: Take off contaminated clothing and wash before reuse. Dispose of contents/ container to an approved waste disposal plant

Other References

Merck
14,6280
Beilstein
2215440
Harmonized Tariff Code
2918.99
TSCA
No

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