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2-Methyl-4-oxo-4-phenylbutyric acid

Also known as: 2-Methyl-3-benzoylpropionic acid, α-Methyl-γ-oxobenzenebutyric acid, 2-methyl-4-oxo-4-phenylbutanoic acid, 4-keto-2-methyl-4-phenyl-butyric acid, Benzenebutanoic acid, α-methyl-γ-oxo-, 2-methyl-4-oxo-4-phenyl-butanoic acid, 2-methyl-4-oxo-4-phenyl-butyric acid, 3-benzoyl-2-methylpropanoic acid

2-Methyl-4-oxo-4-phenylbutyric acid (CAS 1771-65-9) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C11H12O3 and a molecular weight of 192.21100 g/mol. Key properties include a melting point of 140-142ºC(lit.), a boiling point of 360.9ºC at 760 mmHg, a density of 1.161g/cm3 and a flash point of 186.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1771-65-9
Jingsj CID
J-1087738-0
Molecular Formula
C11H12O3
Molecular Weight
192.21100 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point140-142ºC(lit.)
Boiling Point360.9ºC at 760 mmHg
Density1.161g/cm3
Flash Point186.3ºC
Exact Mass192.07900
PSA54.37000
LogP1.98010
Vapor Pressure7.71E-06mmHg at 25°C
Refractive Index1.537

Customs & Trade Information

HS Code2918300090
Summary2918300090 other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-Methyl-4-oxo-4-phenylbutyric acid?

The CAS number of 2-Methyl-4-oxo-4-phenylbutyric acid is 1771-65-9.

What are the molecular formula and molecular weight of 2-Methyl-4-oxo-4-phenylbutyric acid?

2-Methyl-4-oxo-4-phenylbutyric acid has molecular formula C11H12O3 and molecular weight 192.21100 g/mol.

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

Last updated:

How to cite: Jingsj. "2-Methyl-4-oxo-4-phenylbutyric acid (CAS 1771-65-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1087738-0 (accessed 2026-11-09).

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