4-(Methylthio)phenylacetic acid

Also known as: 2-(4-(methylthio)phenyl)acetic acid, 2-(4-methylsulfanylphenyl)acetic acid, 2-[4-(Methylsulfanyl)phenyl]acetic acid, 4-(Methylthio)benzeneacetic acid, Benzeneacetic acid, 4-(methylthio)-, (4-METHYLSULFANYL-PHENYL)-ACETIC ACID, RARECHEM AL BO 0923, [4-(Methylsulfanyl)phenyl]acetic acid

4-(Methylthio)phenylacetic acid (CAS 16188-55-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H10O2S and a molecular weight of 182.240 g/mol. Key properties include a melting point of 97-98 °C(lit.), a boiling point of 337.4±25.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 157.9±23.2 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

16188-55-9

Jingsj CID

J-8194-7

Molecular Formula

C₉H₁₀O₂S

Molecular Weight

182.240 g/mol

Category

Organic Acids

Last updated

8/21/2026