S-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid chloride
[CAS# 20445-33-4]

Identification

• Classification: Analytical chemistry >> Analytical reagent >> Common analytical reagents
• Name: S-(+)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetic acid chloride
• Synonyms: (S)-3,3,3-Trifluoro-2-methoxy-2-phenylpropionyl chloride; (S)-MTPA chloride; (S)-MTPA-Cl; (S)-Mosher's acid chloride; (S)-alpha-Methoxy-alpha-(trifluoromethyl)phenylacetyl chloride; Mosher's reagent
• Molecular Formula: C₁₀H₈ClF₃O₂
• Molecular Weight: 252.62
• CAS Registry Number: 20445-33-4
• EC Number: 633-847-5

Properties

• Solubility: Practically insoluble (0.076 g/L) (25 ºC), Calc.^*
• Density: 1.348±0.06 g/cm³ (20 ºC 760 Torr), Calc.^*
• Boiling point: 67-68 ºC (2 Torr)^**
• Flash point: 90.0±0.0 ºC, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2014 ACD/Labs)

^** Kang, G. J.; Journal of Organic Chemistry 1985, V50(4), P452-7.

Safety Data

• Hazard Symbols: C
• Risk Codes: R34;R43
• Safety Description: S26;S36/37/39;S45

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Skin corrosion	Skin Corr.	1B	H314
Substances or mixtures corrosive to metals	Met. Corr.	1	H290
Serious eye damage	Eye Dam.	1	H318
Skin corrosion	Skin Corr.	1C	H314

• Transport Information: UN 3265 8 / PGII