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(S)-(+)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride

(S)-(+)-α-甲氧基-α-(三氟甲基)苯乙酰氯

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

(S)-(+)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride (CAS 20445-33-4) 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 252.61800 g/mol. It is also known as (S)-(+)-MTPA-Cl, (+)-Mosher's acid chloride and Mosher's acid chloride. Key properties include a boiling point of 213-214 °C(lit.), a density of 1.35 g/mL at 25 °C(lit.) and a flash point of 194 °F. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20445-33-4
Jingsj CID
J-25412-4
Molecular Formula
C10H8ClF3O2
Chinese Name
(S)-(+)-α-甲氧基-α-(三氟甲基)苯乙酰氯
Molecular Weight
252.61800 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point213-214 °C(lit.)
Density1.35 g/mL at 25 °C(lit.)
Flash Point194 °F

GHS Safety & Compliance

CorrosionSignal word: Danger

Frequently Asked Questions

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

The CAS number of (S)-(+)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride is 20445-33-4.

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

(S)-(+)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride has molecular formula C10H8ClF3O2 and molecular weight 252.61800 g/mol.

Is (S)-(+)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride hazardous?

(S)-(+)-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. "(S)-(+)-α-Methoxy-α-(trifluoromethyl)phenylacetyl chloride (CAS 20445-33-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-25412-4 (accessed 2026-10-22).

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