2-(4-butylphenyl)propanoic acid

布洛芬杂质B

Also known as: p-Butyl Ibuprofen, Ibuprofen Impurity B, Ibuprofen EP Impurity B, (2RS)-2-(4-butylphenyl)propanoic acid, 2-(4-n-butylphenyl)propionic acid, p-Butylhydratropic Acid, 4-Butyl-α-methylbenzeneacetic acid, Benzeneacetic acid, 4-butyl-α-methyl-

2-(4-butylphenyl)propanoic acid (CAS 3585-49-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C13H18O2 and a molecular weight of 206.281 g/mol. It is also known as p-Butyl Ibuprofen, Ibuprofen Impurity B and Ibuprofen EP Impurity B. Key properties include a boiling point of 325.8±11.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 222.8±14.4 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3585-49-7
Jingsj CID
J-1365874-4
Molecular Formula
C13H18O2
Chinese Name
布洛芬杂质B
Molecular Weight
206.281 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point325.8±11.0 °C at 760 mmHg
Density1.0±0.1 g/cm3
Flash Point222.8±14.4 °C

GHS Safety & Compliance

Flammable / IrritantSignal word: Danger

Frequently Asked Questions

What is the CAS number of 2-(4-butylphenyl)propanoic acid?

The CAS number of 2-(4-butylphenyl)propanoic acid is 3585-49-7.

What are the molecular formula and molecular weight of 2-(4-butylphenyl)propanoic acid?

2-(4-butylphenyl)propanoic acid has molecular formula C13H18O2 and molecular weight 206.281 g/mol.

Is 2-(4-butylphenyl)propanoic acid hazardous?

2-(4-butylphenyl)propanoic acid has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "2-(4-butylphenyl)propanoic acid (CAS 3585-49-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1365874-4 (accessed 2026-10-24).

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