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(R)-(-)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride

(R)-(-)-α-甲氧基-α-(三氟甲基)苯乙酰氯

Also known as: (R)-(-)-Mosher's acid chloride, (-)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride, (-)-MTPA-Cl, (R)-(-)-MTPA-Cl, (2R)-3,3,3-trifluoro-2-methoxy-2-phenylpropanoyl chloride

(R)-(-)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride (CAS 39637-99-5) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C10H8ClF3O2 and a molecular weight of 252.617 g/mol. It is also known as (R)-(-)-Mosher's acid chloride, (-)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride and (-)-MTPA-Cl. Key properties include a boiling point of 213.5±0.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 90.0±0.0 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
39637-99-5
Jingsj CID
J-17293-2
Molecular Formula
C10H8ClF3O2
Chinese Name
(R)-(-)-α-甲氧基-α-(三氟甲基)苯乙酰氯
Molecular Weight
252.617 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point213.5±0.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point90.0±0.0 °C

GHS Safety & Compliance

CorrosionSignal word: Danger

Frequently Asked Questions

What is the CAS number of (R)-(-)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride?

The CAS number of (R)-(-)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride is 39637-99-5.

What are the molecular formula and molecular weight of (R)-(-)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride?

(R)-(-)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride has molecular formula C10H8ClF3O2 and molecular weight 252.617 g/mol.

Is (R)-(-)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride hazardous?

(R)-(-)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride has GHS signal word Danger.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "(R)-(-)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride (CAS 39637-99-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17293-2 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.