(S)-(−)-α-Methoxy-α-(trifluoromethyl)phenylacetic acid

ALDRICH/318035 - ≥99%

Synonym: (−)-MTPA; Mosher’s acid

CAS Number: 17257-71-5
Empirical Formula (Hill Notation): C₁₀H₉F₃O₃
Molecular Weight: 234.17
EC Number: 241-292-1
MDL Number: MFCD00064200
Linear Formula: C₆H₅C(OCH₃)(CF₃)CO₂H
Product Type: Chemical

Catalog Number	PKG Qty.	Price	Quantity


45-318035-250MG	250 mg	$87.90 1/EA		Add To Favorites
45-318035-1G	1 g	$187.00 1/EA		Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

assay	≥99%
bp	95-97 °C/0.05 mmHg (lit.)
density	1.303 g/mL at 25 °C (lit.)
functional group	carboxylic acid
	ether
	fluoro
	phenyl
InChI	1S/C10H9F3O3/c1-16-9(8(14)15,10(11,12)13)7-5-3-2-4-6-7/h2-6H,1H3,(H,14,15)/t9-/m0/s1
InChI key	JJYKJUXBWFATTE-VIFPVBQESA-N
mp	46-49 °C (lit.)
optical activity	[α]18/D −72°, c = 1.6 in methanol
optical purity	ee: 99% (GLC)
Quality Level	200
refractive index	n20/D 1.474 (lit.)
SMILES string	CO[C@](C(O)=O)(c1ccccc1)C(F)(F)F
storage temp.	2-8°C

General description:	(S)-(-)-α-Methoxy-α-(trifluoromethyl)phenylacetic acid is commonly used as a derivatizing agent in Mosher ester analysis and Mosher amide analysis, which are NMR-based methods for determining the absolute configuration of the chiral carbon center in secondary alcohols and amines, respectively.
Other Notes:	doi:10.1038/nprot.2007.354
Packaging:	1 g in glass bottle
Packaging:	250 mg in glass bottle
Packaging:	Bottomless glass bottle. Contents are inside inserted fused cone.

Symbol	GHS07
Signal word	Warning
Hazard statements	H315 - H319 - H335
Precautionary statements	P302 + P352 - P305 + P351 + P338
Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
RIDADR	NONH for all modes of transport
WGK Germany	WGK 3
Flash Point(F)	235.4 °F - closed cup
Flash Point(C)	113 °C - closed cup

Purity	≥99%
bp	95-97 °C/0.05 mmHg (lit.)
mp	46-49 °C (lit.)
Density	1.303 g/mL at 25 °C (lit.)
Refractive Index	n20/D 1.474 (lit.)
Storage Temp.	2-8°C
UNSPSC	12352112

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