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

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

CAS-Nummer
20445-31-2
Synonyme
(+)-Mosher's acid
(+)-MTPA

Größe Preis ($) Menge Verfügbarkeit
0.1g 35,46
500mg 73,54
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(R)-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid, 99%

MDL
MFCD00004184
EINECS
243-829-5

Chemische Eigenschaften

Formel
C10H9F3O3
Molmasse
234.18
Schmelzpunkt
43-45°
Siedepunkt
105-107°/1mm
Flammpunkt
>110°(230°F)
Dichte
1.344
Brechungsindex
1.4730
Sensitivität
Hygroscopic
Löslichkeit
Soluble in methanol (50 mg/ 1 ml).

Anwendungen

(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.

Bemerkungen

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

Literaturverweise

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 Gefahren- und Sicherheitshinweise

Gefahrenhinweise (EU): H315-H319-H335

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

Sicherheitshinweise: P261-P280-P305+P351+P338-P304+P340-P362-P312-P321-P405-P403+P233-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. Take off contaminated clothing and wash before reuse. Call a POISON CENTER or doctor/physician if you feel unwell. Specific treatment (see label). Store locked up. Store in a well-ventilated place. Keep container tightly closed. Dispose of contents/container in accordance with local/regional/national/international regulations.

Weitere Referenzen

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

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