(R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid
[CAS# 20445-31-2]

Identification

• Classification: Analytical chemistry >> Analytical reagent >> Common analytical reagents
• Name: (R)-(+)-alpha-Methoxy-alpha-trifluoromethylphenylacetic acid
• Synonyms: Mosher's Acid; (+)-MTPA
• Molecular Formula: C₁₀H₉F₃O₃
• Molecular Weight: 234.17
• CAS Registry Number: 20445-31-2
• EC Number: 243-829-5

Properties

• Density: 1.344
• Melting point: 46-49 ºC
• Boiling point: 105-107 ºC (1 mmHg)
• Refractive index: 1.473
• Flash point: 110 ºC

Safety Data

• Hazard Symbols: Xi
• Risk Codes: R36/37/38
• Safety Description: S26;S36

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin irritation	Skin Irrit.	2	H315
Eye irritation	Eye Irrit.	2	H319
Specific target organ toxicity - single exposure	STOT SE	3	H335