396583

Sigma-Aldrich

4′-(Methylthio)acetophenone

97%

Linear Formula:
CH3SC6H4COCH3
CAS Number:
Molecular Weight:
166.24
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22
Pricing and availability is not currently available.

Quality Level

assay

97%

mp

80-82 °C (lit.)

SMILES string

CSc1ccc(cc1)C(C)=O

InChI

1S/C9H10OS/c1-7(10)8-3-5-9(11-2)6-4-8/h3-6H,1-2H3

InChI key

JECUZQLBQKNEMW-UHFFFAOYSA-N

Related Categories

General description

4′-(Methylthio)acetophenone (4-(Methylthio)acetophenone, p-(methylthio) acetophenone, 4-MTAP) is a sulphur containing organic building block. It is a key intermediate in drug synthesis. Its industrial preparation, via Friedel-Crafts acylation reaction in the presence of aluminium chloride as catalyst and acetyl chloride as acylating agent has been reported. It has been prepared by the acetylation reaction of thioanisole with acetic anhydride in the presence of solid acid catalyst.

Application

4′-(Methylthio)acetophenone may be used for the synthesis of Vioxx (Rofecoxib), an non-steroidal anti-inflammatory drug (NSAID). It may be used in the synthesis of (E)-1-[4-(methylsulfanyl)phenyl]-3-phenylprop-2-en-1-one.

Packaging

1 g in glass bottle

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Precautionary Statements

Target Organs

Respiratory system

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

RIDADR

NONH for all modes of transport

WGK Germany

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Experimental and theoretical analysis of Friedel-Crafts acylation of thioanisole to 4-(methylthio) acetophenone using solid acids.
Yadav GD and Bhagat RD.
J. Mol. Catal. A: Chem., 235(1), 98-107 (2005)
(E)-1-[4-(Methylsulfanyl) phenyl]-3-phenylprop-2-en-1-one.
Thiruvalluvar A, et al.
Acta Crystallographica Section E, Structure Reports Online, 64(7), o1263-o1263 (3008)
Liquid phase acetylation of thioanisole with acetic anhydride to 4-(methylthio) acetophenone (4-MTAP) using H-beta catalyst.
Sawant DP and Halligudi SB.
Catalysis Communications, 5(11), 659-663 (2004)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon

MilliporeSigma

Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.