2,3,4,5,6-pentamethylbenzophenone

2,3,4,5,6-五甲基苯甲酮

Also known as: (2,3,4,5,6-pentamethylphenyl)(phenyl)methanone, (2,3,4,5,6-pentamethylphenyl)-phenylmethanone, 2,3,4,5,6-Pentamethyl benzopheneone, 2,3,4,5,6-Pentamethyl-benzophenon, PENTAMETHYLBENZOPHENONE, benzoylpentamethylbenzene, Methanone, (2,3,4,5,6-pentamethylphenyl)phenyl-, MFCD00051595

2,3,4,5,6-pentamethylbenzophenone (CAS 20386-33-8) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C18H20O and a molecular weight of 252.35100 g/mol. It is also known as (2,3,4,5,6-pentamethylphenyl)(phenyl)methanone, (2,3,4,5,6-pentamethylphenyl)-phenylmethanone and 2,3,4,5,6-Pentamethyl benzopheneone. Key properties include a melting point of 135-137 °C(lit.), a boiling point of 380.9ºC at 760mmHg, a density of 1.013g/cm3 and a flash point of 163.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
20386-33-8
Jingsj CID
J-5398-5
Molecular Formula
C18H20O
Chinese Name
2,3,4,5,6-五甲基苯甲酮
Molecular Weight
252.35100 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point135-137 °C(lit.)
Boiling Point380.9ºC at 760mmHg
Density1.013g/cm3
Flash Point163.8ºC

Frequently Asked Questions

What is the CAS number of 2,3,4,5,6-pentamethylbenzophenone?

The CAS number of 2,3,4,5,6-pentamethylbenzophenone is 20386-33-8.

What are the molecular formula and molecular weight of 2,3,4,5,6-pentamethylbenzophenone?

2,3,4,5,6-pentamethylbenzophenone has molecular formula C18H20O and molecular weight 252.35100 g/mol.

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

Last updated:

How to cite: Jingsj. "2,3,4,5,6-pentamethylbenzophenone (CAS 20386-33-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-5398-5 (accessed 2026-10-23).

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