4-(Methylsulfinyl)benzoic acid

4-甲亚砜基苯甲酸

Also known as: 4-Methylsulfinylbenzoic acid, 4-Methanesulfinylbenzoic acid, Benzoic acid, 4-(methylsulfinyl)-, 4-Methylsulfinylbenzoate, Etoricoxib Impurity 36, Etoricoxib Impurity 48, p-(Methylsulfinyl)benzoic acid, 4-Carboxyphenyl methyl sulfoxide, (+-)-4-Methylsulfin-benzoesaeure

4-(Methylsulfinyl)benzoic acid (CAS 33963-58-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C8H8O3S and a molecular weight of 184.212 g/mol. It is also known as 4-Methylsulfinylbenzoic acid, 4-Methanesulfinylbenzoic acid and Benzoic acid, 4-(methylsulfinyl)-. Key properties include a melting point of 229 °C, a boiling point of 403.3±28.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 197.7±24.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 33963-58-5
Jingsj CID: J-1394106-4
Molecular Formula: C₈H₈O₃S
Chinese Name: 4-甲亚砜基苯甲酸
Molecular Weight: 184.212 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	229 °C
Boiling Point	403.3±28.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	197.7±24.0 °C

Frequently Asked Questions

What is the CAS number of 4-(Methylsulfinyl)benzoic acid?

The CAS number of 4-(Methylsulfinyl)benzoic acid is 33963-58-5.

What are the molecular formula and molecular weight of 4-(Methylsulfinyl)benzoic acid?

4-(Methylsulfinyl)benzoic acid has molecular formula C8H8O3S and molecular weight 184.212 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4-(Methylsulfinyl)benzoic acid (CAS 33963-58-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1394106-4 (accessed 2026-10-22).

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