4'-(Methylsulfonyl)acetophenone

Also known as: 1-[4-(methylsulfonyl)phenyl]ethan-1-one, 1-(4-methylsulfonylphenyl)ethanone, 1-(4-methylsulfonylphenyl)ethan-1-one, 4-Methylsulphonylacetophenone, 4-Methylsulfonylacetophenone, 4'-(Methylsulphonyl)acetophenone, 4'-Mesylacetophenone, 4-(Methylsulfonyl)acetophenone, 4-Acetophenone methyl sulfone, Ethanone, 1-(4-methylsulfonylphenyl)-, Ethanone, 1-[4-(methylsulfonyl)phenyl]-, Etoricoxib impurity C, Etoricoxib related compound A, Rofecoxib intermediate

4'-(Methylsulfonyl)acetophenone (CAS 10297-73-1) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C9H10O3S and a molecular weight of 198.24 g/mol. Key properties include a melting point of 126-129 °C(lit.), a boiling point of 385.4±34.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 242.0±18.3 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 10297-73-1
Jingsj CID: J-44660-6
Molecular Formula: C₉H₁₀O₃S
Molecular Weight: 198.24 g/mol
Category: Ketones
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Melting Point	126-129 °C(lit.)
Boiling Point	385.4±34.0 °C at 760 mmHg
Density	1.2±0.1 g/cm3
Flash Point	242.0±18.3 °C
Exact Mass	198.035065
PSA	59.59000
LogP	0.40
Vapor Pressure	0.0±0.9 mmHg at 25°C
Refractive Index	1.521

Customs & Trade Information

HS Code	2914700090
Summary	HS: 2914700090 halogenated, sulphonated, nitrated or nitrosated derivatives of ketones and quinones, whether or not with other oxygen function Tax rebate rate:9.0% Supervision conditions:none VAT:17.0% MFN tariff:5.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 4'-(Methylsulfonyl)acetophenone?

The CAS number of 4'-(Methylsulfonyl)acetophenone is 10297-73-1.

What are the molecular formula and molecular weight of 4'-(Methylsulfonyl)acetophenone?

4'-(Methylsulfonyl)acetophenone has molecular formula C9H10O3S and molecular weight 198.24 g/mol.

What are the upstream and downstream products of 4'-(Methylsulfonyl)acetophenone?

For 4'-(Methylsulfonyl)acetophenone, Upstream Products: 4'-Methylthioacetophenone, 1-(4-Iodophenyl)ethanone, Sodium methanesulfinate; Downstream Products: 4-(Methylsulfonyl)phenylacetic acid, 2-Bromo-1-[4-(methylsulfonyl)phenyl]ethanone, Rofecoxib.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4'-(Methylsulfonyl)acetophenone (CAS 10297-73-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-44660-6 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.