2-(Trifluoroacetyl)thiophene

2-(三氟乙酰基)噻吩

Also known as: 2,2,2-Trifluoro-1-(2-thienyl)ethanone, 2-Thienyl trifluoromethyl ketone, 1-(Thien-2-yl)-2,2,2-trifluoroethan-1-one, 2,2,2-Trifluoro-1-thiophen-2-yl-ethanone, Ethanone, 2,2,2-trifluoro-1-(2-thienyl)-, MFCD00041427

2-(Trifluoroacetyl)thiophene (CAS 651-70-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H3F3OS and a molecular weight of 180.14800 g/mol. It is also known as 2,2,2-Trifluoro-1-(2-thienyl)ethanone, 2-Thienyl trifluoromethyl ketone and 1-(Thien-2-yl)-2,2,2-trifluoroethan-1-one. Key properties include a boiling point of 163ºC, a density of 1.403 and a flash point of 138 °F. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
651-70-7
Jingsj CID
J-5684-3
Molecular Formula
C6H3F3OS
Chinese Name
2-(三氟乙酰基)噻吩
Molecular Weight
180.14800 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point163ºC
Density1.403
Flash Point138 °F

GHS Safety & Compliance

Flammable / IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 2-(Trifluoroacetyl)thiophene?

The CAS number of 2-(Trifluoroacetyl)thiophene is 651-70-7.

What are the molecular formula and molecular weight of 2-(Trifluoroacetyl)thiophene?

2-(Trifluoroacetyl)thiophene has molecular formula C6H3F3OS and molecular weight 180.14800 g/mol.

Is 2-(Trifluoroacetyl)thiophene hazardous?

2-(Trifluoroacetyl)thiophene has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "2-(Trifluoroacetyl)thiophene (CAS 651-70-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-5684-3 (accessed 2026-10-22).

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